| 21905 | If n is the product of the integers from 1 to 20… | Medium | |
| 21916 | On dividing 15698 by a certain number, we get 89 as quotient… | Medium | |
| 21959 | If n = 3 x 4 x p, where p is a… | Medium | |
| 21995 | A bank issued credit card numbers and the corresponding PIN (Personal Identification… | Medium | |
| 22043 | When x is divided by y, the quotient is s with remainder… | Medium | |
| 22077 | If the number 992,132,24x is divisible by 11, what must be the… | Medium | |
| 22093 | Let n~ be defined for all positive integers n as the remainder… | Medium | |
| 22112 | How many integers C are prime numbers in the range 200 <… | Medium | |
| 22141 | Find large number from below question The difference of two numbers is… | Medium | |
| 22188 | How many positive factors do 180 and 90 have in common | Medium | |
| 22203 | x and y are positive integers | Medium | |
| 22215 | Let X be the smallest positive integer such that 10 and 14… | Medium | |
| 22321 | How many factors of 990 are odd numbers greater than 1 | Medium | |
| 22381 | The remainder when W=1+3+3^2+3^3+..........+3^200 is divided 13 | Medium | |
| 22391 | 8^100 is divisible by 17 | Medium | |
| 22427 | How many 5 digit numbers can be formed by using 0,2,4,6,8 which… | Medium | |
| 22435 | If x and y are integers and xy = 330, x or… | Medium | |
| 22477 | Find all positive integers n such that n^2 + 1 is divisible… | Medium | |
| 22486 | What is the smallest number Y which when increased by 5 is… | Medium | |
| 22514 | How many of the following numbers are divisible by 132 | Medium | |
| 22614 | The function f is defined for all the positive integers h by… | Medium | |
| 22645 | d, q, and r are positive integers | Medium | |
| 22663 | A number when divided by 6 leaves a remainder 3 | Medium | |
| 22719 | When 30 is divided by the positive integer k, the remainder is… | Medium | |
| 22736 | If n is a positive integer and n^2 is divisible by 72… | Medium | |
| 22799 | The sum of two prime numbers is 85 | Medium | |
| 22844 | What is the product of the greatest 2 digit multiple of 15… | Medium | |
| 22863 | If 9 is a factor of 2k, then which of the following… | Medium | |
| 22944 | From the below series find the remainder | Medium | |
| 22973 | The product Z of two prime numbers is between 15 and 36 | Medium | |
| 22995 | If the number 653ab is divisible by 90, then (a + b)… | Medium | |
| 23069 | If a+5/b is a prime integer, which of the following must be… | Medium | |
| 23073 | If w is divisible by 10 and 4, w must be a… | Medium | |
| 23102 | What is the sum of all 3 digit numbers that leave a… | Medium | |
| 23110 | Given positive even integer y, which of the following CANNOT be evenly… | Medium | |
| 23121 | This topic is locked | Medium | |
| 23124 | The sum of first five prime numbers is | Medium | |
| 23162 | How many no.'s with 3 different digits, 2, 3, 5, 6, 7… | Medium | |
| 23227 | A pair of prime numbers that can be expressed in the form… | Medium | |
| 23322 | When positive integer n is divided by 4, the remainder is 2 | Medium | |
| 23335 | What is remainder of the division (1625*1627*1629)/12 | Medium | |
| 23367 | If k = 2n - 1, where n is an integer, what… | Medium | |
| 23392 | The value of x is one quarter of z | Medium | |
| 23415 | If 0 < L < Y, L is an odd number and… | Medium | |
| 23420 | For some integer y, y^2 - 5 is divisible by all of… | Medium | |
| 23422 | If t and y are different prime numbers less than ten, what… | Medium | |
| 23479 | On dividing 15968 by a certain number, the quotient is 89 and… | Medium | |
| 23486 | How many positive integers Q between 200 and 300 (both inclusive) are… | Medium | |
| 23505 | For an integer x greater than 1, x* denotes the product of… | Medium | |
| 23514 | The greatest number of four digits which is divisible by 15, 25… | Medium | |