| 29303 | 1,257 1,275 1,527 | Medium | |
| 29305 | On multiplying a number by 7, the product is a number each… | Medium | |
| 29327 | If the number of 37,29n, where n represents the ones digit, is… | Medium | |
| 29333 | How many positive integers less than 10,000 are such that the product… | Medium | |
| 29346 | How many pages the book have, if total 306 digits are used… | Medium | |
| 29550 | If 41/88 = 0.46590, what is the 77th digit to the right… | Medium | |
| 29663 | How many four-digit numbers that do not contain the digits 2, 3… | Medium | |
| 29664 | All of the citizens of a country have a seven-character or eight-character… | Medium | |
| 29710 | How many six digit phone numbers can you frame using the digits… | Medium | |
| 29820 | How many positive four-digit integers do not contain any digits other than… | Medium | |
| 29856 | a is the hundreds digit of the three digit integer x, b… | Medium | |
| 29876 | s(n) is a n-digit number formed by attaching the first n perfect… | Medium | |
| 30059 | How many positive integers H less than 10,000 are such that the… | Medium | |
| 30195 | How many four-digit numbers are there such that all four digits are… | Medium | |
| 30222 | How many digits will be there to the right of the decimal… | Medium | |
| 30408 | AB + CD = XXX, where AB and CD are two-digit numbers… | Medium | |
| 30421 | If one of the followings is the product of the two 3-digit… | Medium | |
| 30440 | How many positive integers C less than 10,000 are such that the… | Medium | |
| 30493 | How many four-digit numbers that do not contain the digits 2, 3… | Medium | |
| 30631 | A number consists of two digits | Medium | |
| 30676 | How many 3-digit numbers can be formed with the digits 1,4,7,8 and… | Medium | |
| 30839 | A five digit number is to be formed using each of the… | Medium | |
| 30840 | FOG + FOG + FOG + FOG = 1456 | Medium | |
| 31089 | A four-character password consists of one letter of the alphabet and three… | Medium | |
| 31091 | If a is a positive integer, and if the units digit of… | Medium | |
| 31124 | a is the hundreds digit of the three digit integer x, b… | Medium | |
| 31207 | If we listed all numbers from 100 to 10,000, how many times… | Medium | |
| 31243 | how many three digit number are thre in which if one digit… | Medium | |
| 31270 | If e is a positive integer and 10^e – 74 in decimal… | Medium | |
| 31320 | find last digits of (1023^3923)+(3081^3921) | Medium | |
| 31410 | Q and R are two-digit positive integers that have the same digits… | Medium | |
| 31431 | In a set of numbers from 100 to 1000 inclusive, how many… | Medium | |
| 31444 | What is the 4 digit number in which the 1st digit is… | Medium | |
| 31518 | What is the unit digit in {(6374)1793 x (625)317 x (341491)} | Medium | |
| 31543 | The digit in the unit’s place of a number is equal to… | Medium | |
| 31573 | What is the tens digit of 6^18 | Medium | |
| 31582 | If x and y are three-digit integers such that x > 400… | Medium | |
| 31584 | How many number of 4 digits can be formed with the digits… | Medium | |
| 31606 | There are 27 different three-digit integers that can be formed using only… | Medium | |
| 31797 | A number consists of 3 digits whose sum is 10 | Medium | |
| 31802 | How many digits are required to number a book containing 250 pages | Medium | |
| 31870 | What is the units digit of 6^m(2^7+1), for a positive integer m | Medium | |
| 31904 | How many 4-digit positive integers are there in which all 4 digits… | Medium | |
| 31928 | Which of the following is closest to the difference between sum E… | Medium | |
| 31982 | How many positive odd integers n less than 1000 have the property… | Medium | |
| 32018 | AB + CD = JJJ, where AB and CD are two-digit numbers… | Medium | |
| 32026 | In how many no | Medium | |
| 32107 | Of the integers between 200 and 799, inclusive, how many do not… | Medium | |
| 32115 | The number obtained by interchanging the two digits of a two-digit number… | Medium | |
| 32271 | S is the infinite sequence S1 = 2, S2 = 22, S3… | Medium | |