| 68827 | For a,e,d are the positive integers, and d|a means that “a is… | Medium | |
| 68829 | How many two-digit numbers yield a remainder of 2 when divided by… | Medium | |
| 68889 | Find the maximum value of n such that 50 | Medium | |
| 68934 | Find the highest value of 'a' so that 365a16 is divisible by… | Medium | |
| 69020 | What least value should be replaced by * in 483*4312 so the… | Medium | |
| 69046 | For any integer n greater than 1, #n denotes the product of… | Medium | |
| 69050 | A number when divided by 5 gives a number which is 8… | Medium | |
| 69278 | The remainder when Q=1+3+3^2+3^3+..........+3^200 is divided 13 | Medium | |
| 69476 | If n is a natural numbe, then(n3 - n)is always divisible by | Medium | |
| 69491 | A man being asked how much he gave for his watch, replied… | Medium | |
| 69511 | An even positive integer 'x' has 'y' positive integral factors including '1'… | Medium | |
| 69528 | What is the greatest positive integer Q such that 3^Q is a… | Medium | |
| 69635 | What is the smallest integer that, when increased by seven, is divisible… | Medium | |
| 69648 | If x and y are different prime numbers less than ten, what… | Medium | |
| 69685 | P is a prime number | Medium | |
| 69692 | If m is a positive integer, and m/15 = 8.2, what is… | Medium | |
| 69805 | The remainder when E=1+3+3^2+3^3+..........+3^200 is divided 13 | Medium | |
| 69831 | If w, z and r are positive integers greater than 1, and… | Medium | |
| 69836 | If a and b are integers and (2^a)(3^b) is a factor of… | Medium | |
| 69852 | Let N be the greatest number that will divide 1305, 4665 and… | Medium | |
| 69854 | In a division sum, the divisor is 5 times the quotient and… | Medium | |
| 69902 | If x and y are both odd prime numbers and x <… | Medium | |
| 69968 | For any integer n greater than 1, n* denotes the product of… | Medium | |
| 70077 | The greatest number which can divide 1356,1868 and 2764 leaving the same… | Medium | |
| 70088 | When the positive integer x is divided by 5 and 7, the… | Medium | |
| 70093 | Prove that there exists infinitely many positive integers n such that 4n^2… | Medium | |
| 70213 | (x^n-a^n) is completely divisible by (x-a), when | Medium | |
| 70239 | 110AB In the above number, A and B represent the tens and… | Medium | |
| 70252 | What is the greatest value of x such that 4^x is a… | Medium | |
| 70325 | What is theleast number should be added to 410, so the sum… | Medium | |
| 70326 | Let C be defined as the sum of all prime numbers between… | Medium | |
| 70352 | If n=3*4*p where p is a prime number greater than 3,how many… | Medium | |
| 70388 | For any integer n greater than 1, n* denotes the product of… | Medium | |
| 70430 | Find the highest value of 'a' so that 36500a is divisible by… | Medium | |
| 70474 | 27 is a perfect cube | Medium | |
| 70517 | For prime numbers x and y, x^3*y^5=z^4 | Medium | |
| 70541 | If c and d are prime numbers, which of the following CANNOT… | Medium | |
| 70587 | When positive integer x is divided by 11, the quotient is y… | Medium | |
| 70588 | If x is a positive integer, f(x) is defined as the number… | Medium | |
| 70591 | For some integer m, m^2 - 5 is divisible by all of… | Medium | |
| 70615 | If a certain number is divisible by 22 and 40, it is… | Medium | |
| 70649 | P is a prime number | Medium | |
| 70655 | x, y, a, and b are positive integers of Q | Medium | |
| 70673 | How many 9 digit numbers are possible by using the digits 1,2,3,4,5… | Medium | |
| 70682 | How many positive integers w less than 30 have no common prime… | Medium | |
| 70707 | If x is divisible by 7, 89, and 45, which of the… | Medium | |
| 70815 | If 6^t is a factor of (10!)^2, What is the greatest possible… | Medium | |
| 70844 | The number N is H,284, where H represents the ten's digit | Medium | |
| 70915 | Which of the following is the lowest positive integer that is divisible… | Medium | |
| 70989 | In doing a division of a question with zero remainder, a candidate… | Medium | |