| 70761 | x, a, z, and b are single digit positive integers | Medium | |
| 70965 | FOG + FOG + FOG + FOG = 1448 | Medium | |
| 71021 | The units digit of (35)^(87) + (3)^(45) is | Medium | |
| 71058 | If the tens digit of positive integer x is 5 and the… | Medium | |
| 71081 | If x = a!, which of these following values of a is… | Medium | |
| 71094 | A “palindromic integer” is an integer that remains the same when its… | Medium | |
| 71277 | How many odd three-digit integers greater than 500 are there such that… | Medium | |
| 71323 | Find the ones digit of 73^350 | Medium | |
| 71527 | If the tens digit x and the units digit y of a… | Medium | |
| 71577 | Find the ones digit of 73^340 | Medium | |
| 71677 | What is the tens digit of 6^22 | Medium | |
| 71697 | What is the sum of all digits for the number 10^26 -… | Medium | |
| 71747 | If the tens digit of positive integer x is 6 and the… | Medium | |
| 71854 | In a two-digit number, if it is known that its unit's digit… | Medium | |
| 71900 | How many digits 2^10 has | Medium | |
| 71902 | The last digit of 12^12+13^13–14^14×15^15= | Medium | |
| 71969 | There are 27 different three-digit integers that can be formed using only… | Medium | |
| 72103 | What is the units digit of the product of the first 2… | Medium | |
| 72105 | What is the sum of all possible 3-digit numbers that can be… | Medium | |
| 72141 | if log 2 = 0.30103, the number of digits in 2128 is | Medium | |
| 72327 | A telephone company needs to create a set of 3-digit area codes | Medium | |
| 72405 | What is the unit digit in 7^105 | Medium | |
| 72595 | Meena wrote all the numbers from 1 to 29,999 inclusive | Medium | |
| 72639 | How many 4 digit numbers can be formed with the digits 0… | Medium | |
| 72687 | FOG + FOG + FOG + FOG = 1444 | Medium | |
| 72784 | What is the units digit of 23^2 * 17^2 * 39^2 | Medium | |
| 72825 | What is the sum of all possible 3-digit numbers that can be… | Medium | |
| 73040 | What is the units digit of (493) (913) (381) (756) (29) | Medium | |
| 73046 | What number is obtained by adding the units digits of 734^99 and… | Medium | |
| 73077 | What is the tens digit of 6^20 | Medium | |
| 73235 | How many different positive integers exist between 10^6 and 10^7, the sum… | Medium | |
| 73240 | How many digits 2^300 has | Medium | |
| 73246 | K-numbers are positive integers with only 2's as their digits | Medium | |
| 73405 | A local bank that has 12 branches uses a two-digit code to… | Medium | |
| 73453 | A palindrome is a number that reads the same forward and backward… | Medium | |
| 73835 | If n = 6^11 – 6, what is the units digit of… | Medium | |
| 73945 | N and M are each 3-digit integers | Medium | |
| 73965 | How many leading zeros (zeros after the decimal point but before the… | Medium | |
| 73989 | What is the units digit of (3^13)(4^13) | Medium | |
| 74032 | In how many no | Medium | |
| 74064 | One half of a two digit number exceeds its one third by… | Medium | |
| 74143 | What is the sum of all possible 3-digit numbers that can be… | Medium | |
| 74363 | What two-digit number is less than the sum of the square of… | Medium | |
| 74517 | The difference between a two-digit number and the number after interchanging the… | Medium | |
| 74538 | Of the three-digit integers greater than 600, how many have distinct digits… | Medium | |
| 74642 | If one of the followings is the product of the two 3-digit… | Medium | |
| 74648 | Find a two digit number, given that the sum of the digits… | Medium | |
| 74651 | How many digits are required to number a book containing 220 pages | Medium | |
| 74706 | What is the 23th digit to the right of the decimal point… | Medium | |
| 74781 | What is the unit’s digit of 7^4 | Medium | |