Practice No. System Questions and Answers

• What is the remainder when 1427 is divided by 13? ...
• What is the remainder when 8035 is divided by 81? ...
• What is the unit digit of 49 15?
• What is the unit digit of 11223? ...
• Find the number of zeroes in the end of 100!
• Find the number of zeroes in the end of 160!
• Find the number of zeroes in the product of 60 × 61 × 62 × ........ × 80?
• Find the number of zeroes in the product of 20 × 21 ×  22 ×   ........ ×   40? ...
• What is least number which when successively divided by 5, 3 and 4 leaves a remainder 4, 2 and 3 respectively? ...
• Least number which when multiplied to 325 gives a perfect square: ...
• Least number which when multiplied to 3456 gives a perfect cube: ...
• How many times I write digit ‘1’ in first hundred natural numbers? 
• 111(16 - 1) is divisible by  ...
• Least number which when subtracted from 5442 gives a perfect square is: ...
• Least number which when subtracted from 6509 so that it is divisible by 58? ...
• Least number which when added to 6460 so that it is divisible by 43. ...
• Least number which when added to 9032 so that it is divisible by 76. ...
• How many digits are required to write first 250 natural numbers? ...
• 11 4 + 11 5 + 11 6 is divisible by  ...
• Find the sum of all factors of 60?
• (5.53 – 4.07) 2/(4.07 – 3.15)(3.15 – 5.53) + (4.07 – 5.53) 2/(3.15 – 5.53)(5.53 – 4.07) + (3.15 – 5.53) 2/(5.53 – 4.07)(4.07 – 3.15) is s...
• The divisor is 35 times the quotient and 7 times the remainder. If the quotient is 18, the dividend is : 
• The unit’s digit in the product 1771 × 2663 × 3365 is 
• If the difference of two numbers is 4 and the difference of their squares is 56, then the larger number is
• Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 20 then the first number is
• Convert 32.56 into binary system?
•    find the value of this? 
• If x and y are two digits of the number 85254xy such that this number is divisible by 90. Find the minimum value of x + y?
• In a question of division, if dividend is 21 times of remainder and quotient is 1/2 of divisor, if remainder is least multiple of 2 and 5 both then find th...
• What will be remainder if 29088/ 6?
• N is a three-digit number. N2= ………74, how many possible values for N? 
• Find the remainder of (46)93 + (48)47  / 47 ?
• All rational numbers are ______ numbers.
• Find the fourth proportional to 2, 3, 6.
• À two-digit number decreases by 18 when its both digits are written in reverse order. If unit digit of original number is equal to the unit digit of 226. ...
• Sum of two digits of a two digit number is 11. When digits of the number are reversed then number formed is 45 more than the original number. Find the orig...
• What is the unit digit of the sum of first 111 whole numbers?
• How many 100 digit positive numbers are there?
• What is the unit digit of (217)413 × (819)547 × (414)624 × (342)812?