How many 5 digit numbers greater than 4000 be formed using the digits 0 to 7 with repetition such that the number formed is a palindrome?
NCERT Solutions for Class 6 Math Chapter 1 Knowing Our Numbers are provided here with simple step-by-step explanations. These solutions for Knowing Our Numbers are extremely popular among Class 6 students for Math Knowing Our Numbers Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the NCERT Book of Class 6 Math Chapter 1 are provided here for you for free. You will also love the ad-free experience on Meritnation’s NCERT Solutions. All NCERT Solutions for class Class 6 Math are prepared by experts and are 100% accurate. Show Page No 1.13:Question 1:Write each of the following numbers in digits by using international place value chart. Also, write them in expanded form Answer:(i) 7,303,206 Expanded form = 7 × 1000000 + 3 × 100000 + 0 × 10000 + 3 × 1000 + 2 × 100 + 0 × 10 + 6 × 1 (ii) 55,029,007 Expanded form = 5 × 10000000 + 5 × 1000000 + 0 × 100000 + 2 × 10000 + 9 × 1000 + 0 × 100 + 0 × 10 + 7 × 1 (iii) 6,110,003,007 Expanded form = 6 × 1000000000 + 1 × 100000000 + 1 × 10000000 + 0 × 1000000 + 0 × 100000 + 0 × 10000 + 3 × 1000 + 0 × 100 + 0 × 10 + 7 × 1 Page No 1.13:Question 2:Rewrite each of the following numerals with proper commas in the international system of numeration. Also, write the number name of each in the international system of numeration Answer:(i) 513,625 or Five hundred thirteen thousand six hundred twenty five. (ii) 4,035,672 or Four million thirty five thousand six hundred seveny two. (iii) 65,954,923 or Sixty five million nine hundred fifty four thousand nine hundred twenty three (iv) 70,902,005 or Seventy million nine hundred two thousand five Page No 1.13:Question 3:Write each of the following numbers in the International system of numeration: Answer:(i) 4,304,084 or Four million three hundred four thousand eighty four. (ii) 63,404,044 or Sixty three million four hundred four thousand forty four. (iii) 735,899 or Seven hundred thirty five thousand eight hundred ninety nine. Page No 1.13:Question 4:Write the following numbers in the Indian system of numeration: Answer:(i) 65,43,210 or Sixty five lakh forty three thousand two hundred ten. (ii) 7,60,85,987 or Seven crore sixty lakh eighty five thousand nine hundred eighty seven. (iii) 32,54,79,838 or Thirty two crore fifty four lakh seventy nine thousand eight hundred thirty eight. Page No 1.13:Question 5:A certain nine digit number has only ones in ones period, only twos in the thousands period and only threes in millions period. Write this number in words in the Indian system. Answer:The number is 333, 222,111. Page No 1.13:Question 6:How many thousands make a million? Answer:1,000 thousands make a million. Page No 1.14:Question 7:How many millions make a billion? Answer:1,000 millions make a billion. Page No 1.14:Question 8:(i) How many lakhs make a million? Answer:(i) Ten lakhs make a million. Page No 1.14:Question 9:Write each of the following in numeral form: (i) Eight million seven hundred eight thousand four. Answer:(i) 8,708,004 Page No 1.14:Question 10:Write the number names of each of the following in international system of numeration: (i) 435,002 Answer:(i) Four hundred thirty-five thousand and two (iv) Twenty-five million, two hundred one thousand, nine hundred and five Page No 1.16:Question 1:How many four-digit numbers are there in all? Answer:There are 10 digits i.e., 0, 1, 2, 3, 4, 5, 6 ,7, 8, 9. Page No 1.16:Question 2:Write the smallest and the largest six digit numbers. Howmany numbers are between these two. Answer:The smallest digit is 0. But we cannot use 0 at the place having the highest place value in six digit numbers. So, we will use the second smallest digit i.e., 1. All other places are filled by 9. The largest digit is 9. We can use 9 at any place. Infact, we can use 9 in all places in six digit numbers. So, the total numbers between 999999 and 100000 will be 899998. Page No 1.16:Question 3:How many 8-digit numbers are there in all? Answer:There are 10 digits i.e., 0, 1, 2, 3, 4, 5, 6 ,7, 8, 9. Page No 1.16:Question 4:Write 10075302 in words and rearrange the digits to get the smallest and the largest numbers. Answer:One crore seventy five thousand three hundred two. In order to write the smallest 8-digit number using digits 0, 1, 2, 3, 5 and 7, we put the smallest digit 1 (Except 0) at the place having the highest place value. The largest digit 7 is put at the right most place i.e. at unit's place, the digit 5 is put at the ten's place, the
digit 3 is put at the hundred's place and the digit 2 is put at the thousand's place. All other places are filled by 0. Page No 1.16:Question 5:What is the smallest 3-digit number with unique digits? Answer:The smallest three-digit number with unique digits is 102. Page No 1.16:Question 6:What is the largest 5-digit number with unique digits? Answer:The largest five-digit number with unique digits is 98,765. Page No 1.16:Question 7:Write the smallest 3-digit number which does not change if the digits are written in reverse order. Answer:The smallest three-digit number that does not change if the digits are written in reverse order is 101. Page No 1.16:Question 8:Find the difference between the number 279 and that obtained on reversing its digits. Answer:The number obtained on reversing 279 = 972 Difference = 972 − 279 = 693 Thus, the difference between 279 and that obtained on reversing its digits is 693. Page No 1.16:Question 9:Form the largest and smallest 4-digit numbers using each of digits 7,1,0,5 only once. Answer:The largest and smallest four-digit numbers formed using 7, 1, 0 and 5 are 7,510 and 1,057. Page No 1.18:Question 1:Put the appropriate symbols (<,>) in each of the following boxes: (i) 102394 99887 Answer:(i) 1,02,394 >
99,887 Page No 1.18:Question 2:Arrange the following numbers in ascending order: (i) 102345694, 8354208, 6539542, 63547201, 12345678 Answer:(i) 65,39,542, 83,54,208, 1,23,45,678, 6,35,47,201, 10,23,45,694 (ii) 1,81,888, 1,90,909, 18,08,088, 18,08,090, 1,60,60,666 Page No 1.18:Question 3:Arrange the following numbers in descending order: (i) 56943300, 56943201, 5695440, 56944000, 5694437 Answer:(i) 5,69,44,000, 5,69,43,300, 5,69,43,201, 56,95,440, 56,94,437 Page No 1.21:Question 1:How many milligrams make on kilogram? Answer:Ten lakh or one million (10,00,000) milligrams make one kilogram. Page No 1.21:Question 2:A box of medicine tablets contains 2,00,000 tablets each weighing 20 mg. What is the total weight of all the tablets in the box in grams? In kilograms? Answer:∵ Each tablet weighs = 20 mg ∴ The weight of 2,00,000 tablets = 2,00,000 ×
20 = 40,00,000 mg We know 1 g = 1,000 mg And, as 1 kg = 1,000 g Page No 1.21:Question 3:Population of Sundar nagar was 2,35,471 in the year 1991. In the year 2001 it was found to have increased by 72,958. What was the population of the city n 2001? Answer:The population of Sundar Nagar in 2001 = Sum of the population of city in 1991 + Increase in population over the given time period Page No 1.21:Question 4:A book exhibition was held for four days in a school. The number of tickets sold at the counter on the first, second, third and final days wre respectively 1094, 1812, 2050 and 2751. Find the total number of tickets sold on all the four days. Answer:Total number of tickets sold on all four days is the sum of the tickets sold on the first, second,
third and final days. Page No 1.21:Question 5:The town newspaper is published everyday. One copy has 12 pages. Everyday 11,980 copies are printed. How many pages are in all printed everyday? Every months? Answer:∵ Number of pages in 1 copy of newspaper = 12 ∴ Number of pages in 11,980 copies of newspaper = 11,980 × 12 = 1,43,760 Thus, 1,43,760 pages are printed every day. Now, number of pages printed every day = 1,43,760 Thus, 43,12,800 pages are printed in a month. Page No 1.21:Question 6:A machine, on an average, manufactures 2825 screws a day. How many screws did it produce in the month of January 2006? Answer:∵ Number of screws produced by a machine in a day = 2,825 Page No 1.21:Question 7:A famous cricket player has so far scored 6978 runs in test matches. He wishes to complete 10,000 runs. How many more runs does he need? Answer:Runs scored by cricket player in test matches = 6,978 ∴ Remaining runs required to complete 10,000 runs = 10,000 − 6,978 = 3,022 Thus, the player needs to score 3,022 more runs to complete 10,000 runs. Page No 1.21:Question 8:Ravish has Rs 78,592 with him. He placed an order for purchasing 39 radio sets at Rs 1234 each. How much money will remain with him after the purchase? Answer:Ravish's initial money = ₹78,592 ∴ Remaining money with Ravish after the purchase = Initial money − Money spent on purchasing 39 radio sets = ₹78,592 − ₹48,126 = ₹30,466 Thus, ₹30,466 is left with him after the purchase. Page No 1.21:Question 9:In an election, the successful candidate registered 5,77,570 votes and his nearest rival secured 3,48,685 votes. By what margin did the successful candidate win the election? Answer:Margin of victory in the election for the successful candidate = Number of votes registered by the winner − Number of votes secured by nearest rival candidate Page No 1.21:Question 10:To stitch a shirt 2 m 15 cm cloth is needed. Out of 40 m cloth, how many shirts can be stiched and how much cloth will ramain? Answer:∵ Total length of available cloth = 40 m = 4,000 cm (1 m = 100 cm) ∵ Length of cloth required to stitch a shirt = 215 cm = 200 + 15 = 215 cm ∴ The number of shirts that can be stitched from the 40-metre cloth = 4,000/215 = 18.60 ∴ Cloth required for stitching 18 shirts = 215 × 18 = 3870 cm Page No 1.21:Question 11:A vessel has 4 litre and 650 ml of curd. In how many glasses, each of 25 ml capacity, can it be distributed? Answer:Number of glasses in which curd can be distributed = Total amount of curd/Capacity of each glass. Total amount of curd in the vessel = 4,650 mL = 4,000 + 650 = 4,650 mL (1 L = 1,000 mL) Page No 1.21:Question 12:Medicine is packed in boxes, each such box weighing 4 kg 500 g. How many such boxes can be loaded in a van which cannot carry beyond 800 kg. Answer:∵ Total capacity of a van carrying boxes of medicines = 800 kg = 8,00,000 g (1 kg = 1,000 g) ∵ Weight of each packed box = 4,500 g = 4,000 + 500 = 4,500 g The obtained number of boxes is not
a whole number. Therefore, we can't load 178 boxes; hence, we can say that 177 boxes can be loaded in the van. Page No 1.21:Question 13:The distance between the school and the house of a student is 1 km 875 m. Everyday she walks both ways between her school and home. Find the total distance covered by her in a week. Answer:∵ Distance between the school and the house of a student = 1,875 m = 1,000 + 875 = 1,875 m (1 km = 1,000 m) ∴ Total distance covered by her in a week = 7 × 3,750 = 26,250 m = 26.25 km Page No 1.26:Question 1:
Round off each of the following numbers to nearest tens: (i) 84 Answer:(i) 80 Page No 1.26:Question 2:Round off each of the following numbers to nearest hundreds: (i) 3,985 Answer:(i) 4,000 (viii) 7,42,900 Page No 1.26:Question 3:Round off each of the following numbers of the nearest thousands: (i) 2,401 Answer:(i) 2,000 Page No 1.26:Question 4:Round off each of the following to the nearest tens, hundreds and thousands: (i) 964 Answer:
Tens
Hundreds Thousands Page No 1.26:Question 5:Round off the following measures to the nearest hundreds: (i) Rs 666 Answer:(i) ₹700 Page No 1.26:Question 6:List all numbers which are rounded off to nearest ten as 370. Answer:365, 366, 367, 368, 369, 370, 371, 372, 373, 374 Page No 1.26:Question 7:Find the smallest and greatest numbers which are rounded off to the nearest hundreds as 900. Answer:Smallest number = 850 Page No 1.26:Question 8:Find the smallest and greatest numbers which are rounded off to the nearest thousands as 9000. Answer:Smallest number = 8,500 Greatest number = 9,499 Page No 1.29:Question 1:Estimate the following by rounding off each factor to nearest hundreds: (i) 730 + 998 Answer:(i) 700 + 1,000 = 1,700 Page No 1.29:Question 2:Estimate the following by rounding off each factor to nearest thousands: (i) 12,904 + 2,888 Answer:(i) 13,000 + 3,000 = 16,000 Page No 1.29:Question 3:Estimate the following by rounding off each number to its greatest place: (i) 439 + 334 + 4,317 Answer:(i) 400 + 300 + 4,000 = 4,700 Page No 1.29:Question 4:Find the estimated quotient for each of the following by rounding off each number of its greatest place: (i) 878÷28 Answer:(i) 900 ÷ 30 = 30 Page No 1.30:Question 1:Write
the expression for each of the following statements using brackets: Answer:(i) 4 × (13 + 7) Page No 1.30:Question 2:Simplify each of the following: Answer:(i) 124 − (12 − 2) × 9 Page No 1.31:Question 1:Simplify
each of the following: Answer:7 × 109 = 7 × (100 + 9) Page No 1.31:Question 2:Simplify the following: Answer:6 × 112 = 6 × (100 + 12) Page No 1.31:Question 3:Simplify the following: 9 × 105 Answer:9 × 105 = 9 × (100 + 5) Page No 1.31:Question 4:Simplify the following: Answer:17 × 109 = (10 + 7) × 109 Page No 1.31:Question 5:Simplify the following: Answer:16 × 108 = (10 + 6) × 108 Page No 1.31:Question 6:Simplify the following: Answer:12 × 105 = (10 + 2) × 105 Page No 1.31:Question 7:Simplify the following: Answer:102 × 103 = (100 + 2) × 103 Page No 1.31:Question 8:Simplify the following: 101 × 105 Answer:101 × 105 = (100 + 1) × 105 Page No 1.31:Question 9:Simplify the following: Answer:109 × 107 = (100 + 9) × 107 Page No 1.35:Question 1:Write the roman-numerals for each of the following: (i) 33 Answer:(i) XXXIII Page No 1.35:Question 2:Write the following in Roman numerals: (i) 154 Answer:(i) CLIV Page No 1.35:Question 3:Write the following in Roman numerals: (i) 1008 Answer:(i) MVIII Page No 1.36:Question 4:Write the following in Roman numerals: (i) 4201 Answer:(i) IVCCI Page No 1.36:Question 5:Write the following in Hindu-Arabic numerals: (i) XXVI Answer:(i) 10 + 10 + 6 = 26 Page No 1.36:Question 6:Write the corresponding Hindu-Arabic numerals for each of the following: (i) CIX Answer:(i) 100 + 9 = 109 Page No 1.36:Question 7:Write the corresponding Hindu-Arabic numerals for each of the following: (i) KXIX Answer:(i) 1,000 +10 + 9 =
1,019 (iii) 1,000 + 1,000 + 100 + 10 + 10 + 3 = 2,123 Page No 1.36:Question 8:Write the following in Hindu-Arabic numerals: (i) IVCDXLIC Answer:(i) 4,000 + (500 − 100) + (50 − 10) + 4 = 4,444 Page No 1.36:Question 9:Which of the following are meaningless? (i) III¯CC Answer:The following numbers are meaningless: Page No 1.36:Question 1:The difference between the place value and face value of 8 in 658742 is Answer:The options given are incorrect. Page No 1.36:Question 2:The difference between the place values of 6 and 3 in 256839 is Answer:The options given are incorrect. Page No 1.36:Question 3:The
difference of the smallest three digit number and the largest two digit number is Answer:(b) 1. The smallest three-digit number is 100 and the largest two-digit number is 99. Page No 1.36:Question 4:The largest three digit number formed by the digits 8, 5, 9 is Answer:(b) 985 Page No 1.36:Question 5:The smallest three digit number having three distinct digits is Answer:(c) 102 The three distinct smallest digits are 0, 1 and 2. To form a smallest number using these digits, we need to arrange them in ascending order, but by this we get 012, which results in a two-digit number. So, the smallest three-digit number having distinct digits is 102. Page No 1.36:Question 6:The largest three digit number having distinct digits is Answer:(a) 987 The largest three distinct digits are 9, 8 and 7. So, the largest number using these digits can be obtained by arranging the digits in descending order. Page No 1.36:Question 7:The difference between the largest three digit number and the largest three digit number with distinct digits is Answer:(c) 12 The largest three-digit number with distinct digits = 987 Page No 1.36:Question 8:The product of the place values of two three in 53432 is Answer:(b) 90,000 Page No 1.37:Question 9:The smallest counting number is Answer:(b) 1 The smallest digit is 0, but the smallest counting number is 1. Page No 1.37:Question 10:The total number of 4 digit numbers is Answer:(b) 9,000 The smallest
four-digit number is 1,000 and the largest four-digit number is 9,999. Page No 1.37:Question 11:The number of 3 digit numbers formed by using 3, 5, 9 taking each digit exactly once, is Answer:(d) 6 The numbers are 359, 395, 539, 593, 935, 953. Page No 1.37:Question 12:Total number of numbers which when rounded off to nearest ten give us 200 is Answer:(b) 10 Page No 1.37:Question 13:The smallest number which when rounded off the nearest hundred as 600, is Answer:(a) 550 Page No 1.37:Question 14:The greatest number which when rounded off to the nearest thousand as 7000, is Answer:(c) 7,499 All numbers from 6,500 to 7,499 are rounded off to the nearest thousand as 7,000. Therefore, the greatest number is 7,499. Page No 1.37:Question 15:The difference between the greatest and smallest numbers which when rounded off a number to the nearest tens as 540, is Answer:(b) 9 Page No 1.37:Question 16:The difference between the greatest and smallest numbers which when rounded off a number to the nearest hundred as 6700, is Answer:(b) 99 Page No 1.37:Question 17:The difference between the greatest and the smallest numbers which when rounded off to the nearest thousand as 9000, is Answer:(c) 999 Page No 1.37:Question 18:Which of the following numbers is equal to 1 billion? Page No 1.37:Question 19:In the international place vlaue system, we write one million for Page No 1.37:Question 20:Which of the following is not meaningful? Answer:We know that 'V' stands for '5' and 'X' stands for '10' in Roman Page No 1.37:Question 21:Which of the following is not
meaningful? Answer:We know that 'V' stands for '5' and 'X' stands for '10' in Roman Page No 1.37:Question 1:How many three digit numbers are there in all? Answer:There are 10 digits i.e., 0, 1, 2, 3, 4, 5, 6
,7, 8, 9. Page No 1.37:Question 2:The difference between the successor and predecessor of 99999 is Answer:Successor of 99999 = 99999 + 1 = 100000 Page No 1.38:Question 3:How many lakhs are there in one million? Answer:We know 1 million = 10 lakhs Page No 1.38:Question 4:The difference between the place value and face value of 8 in 357864 is Answer:Place value of 8 = 8 × 100 = 800 Page No 1.38:Question 5:Ten millions equal to Answer:We know 1 million = 10 lakhs Page No 1.38:Question 6:One trillion equals Answer:We know 1 trillion = 1000 billions Page No 1.38:Question 7:One billion equals Answer:We know 1 billion = 100 crores Page No 1.38:Question 8:How many times does the digit 9 occur between 1 and 100? Answer:In units place, i.e.,
9, 19, 29, 39, 49, 59, 69, 79, 89, 99 Page No 1.38:Question 9:1827 when rounded off to the nearest hundred is Answer:In 1827 the last two digits i.e., 27 is less than 50. Page No 1.38:Question 10:2985 is rounded off to the nearest hundred and the nearest tens. The difference between the two values is Answer:In 2985 the last two digits i.e., 85 is greater than 50. Page No 1.38:Question 11:Write each of the following numerals in Indian
system of numeration: Answer:(i) 27,943 or Twenty seven thousand nine hundred forty three. Page No 1.38:Question 12:Write each of the following numerals in International system of numeration: Answer:(i) Eighty three thousand two hundred fifty four Page No 1.38:Question 13:Estimate the sum (4505 + 27807 + 21397) to the nearest thousand. Answer:4505 + 27807 + 21397 = 53709 Page No 1.38:Question 14:Estimate the product 475 × 225 rounding off each number to the nearest hundred. Answer:In 475 the last two digits i.e., 75 is greater than 50. Page No 1.38:Question 15:Write each of the following in Hindu-Arabic numeral: Answer:(i) 224 Page No 1.38:Question 16:Write the greatest and the smallest numbers of 4 digits that can be formed using the digits 0, 8, 7, 5 ; using each digit only once. Answer:In order
to write the largest 4-digit number using digits 0, 5, 7 and 8, we put the largest digit 8 at the place having the highest place value. The smallest digit 0 is put at the right most place i.e. at unit's place, the digit 7 is put at the hundred's place and the digit 5 is put at the ten's place. Hence, the required largest number is 8750. Page No 1.38:Question 17:Write all natural numbers between 500 and 600 which do not change if the digits are written in the reverse order. Answer:To write the natural numbers between 500 and 600 which do not change if the
digits are written in the reverse order we must have the same digit at the hundred's place and unit's place. Page No 1.38:Question 18:Write (i) the smallest (ii) the largest 6 digit numbers having four different digits. Answer:(i) Four smallest digits are 0, 1,2 and 3. In order to generate the smallest 6-digit number using digits
0, 1, 2 and 3, we write the smallest non-zero digit at the place having the highest place value and the largest digit at the place having least place value. Thus, we put 1 in the left-most place and 3 in the right-most place. Digit 2 is put at ten's place and at all other places we write zero. (ii) To write the greatest 6-digit number having four different digits, we will have to use four largest digits. Clearly 9, 8, 7 and 6 are four largest
digits. In order to write the largest 6-digit number using digits 6, 7, 8 and 9, we put the largest digit 9 at the place having the highest place value. The smallest digit 8 is put at the hundred's place, the smallest digit 6 is put at the right most place i.e. at unit's place and the digit 7 is put at the ten's place. All other places are filled by 9. Page No 1.38:Question 19:In two-digit numbers, how many times
does the digit 5 occur in Answer:(i) In ten's place i.e., starting from 50 to 59, (ii) In units place, i.e., 15, 25, 35, 45, 55, 65, 75, 85, 95 Page No 1.38:Question 20:Write the greatest 6-digit number formed by three different digits. Answer:To write the greatest 6-digit number
having three different digits, we will Page No 1.38:Question 21:1 billion = __________million. Answer:1 billion = 1000000000 Page No 1.38:Question 22:1 billion = ..........crore Answer:1 billion = 1000000000 Page No 1.38:Question 23:The smallest four digit number with four different digits is ______________ Answer:Four smallest digits are 0, 1,2 and 3. In order to write the smalest 4-digit number using digits 0, 1, 2 and 3, we put the smallest digit 1 (Except 0) at the place having the highest place value. The largest digit 3 is put at the right most place i.e. at unit's place, the digit 2 is put at the ten's place and the digit 0 is put at the hundred's place. Hence, the required largest number is 1023. The smallest four digit number with four different digits is 1023 .Page No 1.38:Question 24:1 crore = millions. Answer:1 crore = 10000000 Page No 1.38:Question 25:The total number of 5 digit numbers = .................. Answer:There are 10 digits i.e., 0, 1, 2, 3, 4, 5, 6 ,7, 8, 9. Page No 1.7:Question 1:Write each of the following in numeral form: Answer:(i) 8,012 Page No 1.7:Question 2:Write the following numbers in words in the Indian system of numeration: Answer:(i) Forty two thousand seven. Page No 1.8:Question 3:Insert commas in the correct positions to separate periods and write the following numvers in words: Answer:(i) 4,357 Page No 1.8:Question 4:Write each of the following expanded notation: (i) 3057 Answer:(i) 3000 + 50 + 7 (ii) 10000 + 2000 + 300 + 40 + 5 (iii) 10000 + 200 + 5 (iv) 200000 + 30000 + 5000 + 60 Page No 1.8:Question 5:Write the corresponding numeral for each of the following: Answer:(i) 70000 + 2000 + 500 + 90 + 6 = 72,596 Page No 1.8:Question 6:Find the place value of the digit 4 in each of the following: Answer:(i) Place value of 4 = 4 × 10,00,000 = 40,00,000 (ii) Place value of 4 = 4 × 10,000 = 40,000 Page No 1.8:Question 7:Determine the product of the place values of two fives in 450758. Answer:Place value of first 5 = 5 × 10 = 50 Page No 1.8:Question 8:Determine the difference of the place values of two 7's in 257839705. Answer:Place value of first 7 = 7 × 100 = 700 Page No 1.8:Question 9:Determine the difference between the place value and the face value of 5 in 78654321. Answer:The number = 7,86,54,321 Page No 1.8:Question 10:Which digits have the same face value and place value in 92078634? Answer:The place value of a digit depends on the place where it occurs, while the face value is the value of the digit itself. Therefore, in 9,20,78,634, 4 (the ones digit) and 0 (the lakhs digit) have the same face value and place value. Page No 1.8:Question 11:How many different 3-digit numbers can be formed by using the digits 0,2,5 without repeating any digit in the number? Answer:The three-digit numbers formed using the digits 0, 2 and 5 (without repeating any digit in the number) are 250, 205, 502 and 520. Page No 1.8:Question 12:Write all possible 3-digit numbers using the digits 6,0,4 when (i) repetition of digits is not
allowed Answer:(i) 604, 640, 460, 406 Page No 1.8:Question 13:Fill in the blank: Answer:(i) 1 lakh = 10 ten thousand View NCERT Solutions for all chapters of Class 6 How many 5As the five-digit number should be greater than 4000 and has to be chosen from the given five digits. So the five-digit numbers greater than 4000 formed by the given 5-digits are 120. Final Answer: The no.
How many numbers greater than 4000 can be formed?Hence, the number of numbers that are greater than 4000 which can be formed using the digits 2, 3, 4, 5, 6 without repetition is 192. Note: You can also use the permutation formula nPr=n! (n−r)! to find the total number of ways of arranging the digits to get the number greater than 4000.
How many 5The answer is that there are 900 five-digit palindromes.
How many 4 digit numbers which are less than 4000 can be formed using the digits 12345 without repetition?So overall there are 3×5×4×3=180 numbers.
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