| 56546 | The sum of the digits of [(10^x)^y]-64=279 | Medium | |
| 56748 | How many positive 5-digit integers have the odd sum of their digits | Medium | |
| 56813 | A three-digit code for certain locks uses the digits 0, 1, 2… | Medium | |
| 56907 | What is the sum of all digits for the number 10^25 -… | Medium | |
| 57380 | How many numbers are there between 100 and 1000 in which all… | Medium | |
| 57383 | Of the three- digit integers greater than 700, how many have two… | Medium | |
| 57419 | If a number is formed by writing integers 1 to 150 one… | Medium | |
| 57507 | If a two-digit positive integer has its digits reversed, the resulting integer… | Medium | |
| 57533 | If the two-digit integers P and N are positive and have the… | Medium | |
| 57550 | The sum of the digits of a two digit number is 7 | Medium | |
| 57555 | A four digit number is such that the product of all of… | Medium | |
| 57651 | what is the sum of all the 4 digit numbers that can… | Medium | |
| 57709 | A company plans to assign identification numbers to its employees | Medium | |
| 57760 | From the digits 2, 3, 4, 5, 6 and 7, how many… | Medium | |
| 57768 | How many different number-plates for cars can be made if each number-plate… | Medium | |
| 57795 | How many integers between 324,700 and 458,600 have a 2 in the… | Medium | |
| 57987 | Of the three-digit integers greater than 900, how many have two digits… | Medium | |
| 58024 | If a number is formed by writing integers 1 to 150 one… | Medium | |
| 58114 | A and B are positive two-digit integers such that the tens digit… | Medium | |
| 58143 | If (10^67) – 63 is written as a base 10 integer, which… | Medium | |
| 58157 | How many odd integers Q between 200 and 600 are there such… | Medium | |
| 58222 | Some numbers are very mysterious | Medium | |
| 58432 | How many three digits number can be formed by using the digits… | Medium | |
| 58456 | If the digits of a two-digit number are interchanged, the number so… | Medium | |
| 58636 | How many four-digit numbers are there, if the two leftmost digits are… | Medium | |
| 58646 | An staff identification code consists of a vowel followed by a 3-digit… | Medium | |
| 58651 | Will must choose a 3-character computer password, consisting of 3 distinct digits… | Medium | |
| 58806 | What is the sum of the digits of integer k, if k… | Medium | |
| 58885 | the largest four-digit number which is a perfect cube, is | Medium | |
| 59000 | In the decimal expansion of (9/10)^4 what is the fourth digit to… | Medium | |
| 59158 | What is the sum of all possible 3-digit numbers that can be… | Medium | |
| 59174 | If the number of 89n,870, where n represents the thousands digit, is… | Medium | |
| 59189 | Find last two digits of the following expression (201*202*203*204*246*247*248*249)^2 | Medium | |
| 59341 | The unit's digit in the product 274 × 318 × 577 ×… | Medium | |
| 59353 | Q | Medium | |
| 59412 | For a positive integer n, let Pn denote the product of the… | Medium | |
| 59572 | How many 3 digits number are there which sum of digits is… | Medium | |
| 59615 | A palindrome is a number that reads the same forward and backward… | Medium | |
| 59698 | A customers identification code consists of a vowel followed by a 3-digit… | Medium | |
| 59764 | How many three digits no | Medium | |
| 60149 | How many even three-digit integers greater than 700 are there such that… | Medium | |
| 60300 | If a is a positive integer, and if the units digit of… | Medium | |
| 60319 | The last two-digits in the multiplication 122 × 123 × 125 ×… | Medium | |
| 60323 | A little boy is numbering his collection of flowers by placing single-digit… | Medium | |
| 60481 | How many three digits number can be formed by using the digits… | Medium | |
| 60641 | QUANT 4-PACK SERIES Problem Solving Pack 4 Question 2 For every positive… | Medium | |
| 60643 | A palindrome is a word or a number that reads the same… | Medium | |
| 60644 | If a number is formed by writing integers 1 to 150 one… | Medium | |
| 60867 | All of the citizens of a country have a four-character or five-character… | Medium | |
| 60872 | There is a sequence such that each term is positive integer and… | Medium | |