| 66751 | The sum of the factors of a number is 124 | Medium | |
| 66810 | Let a be a positive integer | Medium | |
| 66869 | what is the remainder when 4.4!*5.5!*6.6!...........19*19 | Medium | |
| 66884 | How many numbers between 1000 and 5000 are exactly divisible by 225 | Medium | |
| 66987 | Which of the following are/is prime | Medium | |
| 67016 | P is a prime number | Medium | |
| 67031 | In a division sum, the divisor is 10 times the quotient and… | Medium | |
| 67059 | If 183 is divisible by 11, find the value of the smallest… | Medium | |
| 67101 | What is the remainder of E=3^19 when divided by 10 | Medium | |
| 67113 | A number of 9 digits has the following properties: The number comprising… | Medium | |
| 67149 | A five digit number divisible by 7 becomes divisible by 3 when… | Medium | |
| 67171 | If 7^e is a factor of the product of the integers from… | Medium | |
| 67196 | Which of the following numbers must be added to 5678 to give… | Medium | |
| 67207 | If 6x^2 + x - 12 = (hx + b)(cx + d)… | Medium | |
| 67295 | If n is a positive integer greater than 1, then p(n) represents… | Medium | |
| 67329 | If integers d and b are distinct factors of 30, which of… | Medium | |
| 67481 | If x is divided by 7, the remainder is 5 | Medium | |
| 67571 | If M is the least positive integer that is divisible by every… | Medium | |
| 67580 | How many two digit numbers of distinct digits can be formed by… | Medium | |
| 67601 | Q is a set of six distinct prime numbers | Medium | |
| 67707 | In the equation m = 36.12n, n and m are integers | Medium | |
| 67765 | In dividing a number by 585, a student employed the method of… | Medium | |
| 67780 | Find the greatest number which divides 83, 125 and 209 leaving the… | Medium | |
| 67816 | z, b, and c are positive integers | Medium | |
| 67825 | If p and q are two different prime numbers, which of the… | Medium | |
| 67855 | What is the greatest 6-digit number when divided by 8 , 9… | Medium | |
| 67866 | Find the greatest number that, while dividing 47, 215 and 365, gives… | Medium | |
| 67893 | 1/3 of girls , 1/2 of boys go to canteen .What factor… | Medium | |
| 67967 | When positive integer N is divided by positive integer P, the quotient… | Medium | |
| 68023 | Twin primes are defined as prime numbers that can be expressed as… | Medium | |
| 68034 | Thefactor countof an integer n greater than 1 is the number of… | Medium | |
| 68055 | How many five digit numbers can be formed by using the digits… | Medium | |
| 68122 | If A and B are two prime numbers bigger than 2, which… | Medium | |
| 68140 | When x is divided by y, the quotient is z with remainder… | Medium | |
| 68194 | How many numbers between 0 and 1670 have a prime tens digit… | Medium | |
| 68195 | If 'b' is a positive integer exactly divisible by 5 or 7… | Medium | |
| 68227 | 76^77 /7 remainder is | Medium | |
| 68284 | When the number 209y913 is exactly divisible by 11, then the smallest… | Medium | |
| 68285 | If the number 98348*0 is exactly divisible by 72, then the minimum… | Medium | |
| 68335 | Let A represent a set of four distinct prime numbers | Medium | |
| 68453 | P is a whole number which when divided by 4 gives 3… | Medium | |
| 68540 | When two different numbers are divided by a certain divisor the remainders… | Medium | |
| 68548 | The least umber of five digits which is exactly divisible by 12,15… | Medium | |
| 68627 | If x and y are prime numbers such that x > y… | Medium | |
| 68639 | For any integer n greater than 1, #n denotes the product of… | Medium | |
| 68674 | If e, f, and g are distinct positive prime numbers, then (e^3)(f)(g)… | Medium | |
| 68727 | Which one of the following is divisible by 9 | Medium | |
| 68747 | (4!)^n is a factor of 12!, but (4!)^(n+1) is not factor of… | Medium | |
| 68756 | When 28 is divided by the positive integer r, the remainder is… | Medium | |
| 68782 | It is given that 2^32 + 1 is exactly divisible by a… | Medium | |