| 86447 | What is the units digit of (3^5)(4^13) | Medium | |
| 86588 | Find the ones digit of 73^351 | Medium | |
| 86753 | What is the units digit of 16^83 × 13^82 × 11^87 | Medium | |
| 86800 | What number is obtained by adding the units digits of 734^98 and… | Medium | |
| 87346 | If 28^2*17^3*12^2 = x, what is the units digit of x | Medium | |
| 87375 | What is the units digit of 2222^(333)*3333^(222) | Medium | |
| 87605 | 1,245 1,254 1,425 | Medium | |
| 88063 | A four-character password consists of one letter of the alphabet and three… | Medium | |
| 88087 | If a and b are positive integers and x = 24^a and… | Medium | |
| 88134 | If r = 199,999 and s = 991,999, which of the following… | Medium | |
| 88150 | If a is a positive integer, and if the units digit of… | Medium | |
| 88314 | How many different 3 digit numbers can be formed from the number… | Medium | |
| 88511 | What is the units digit of the expression 14^7−15^4 | Medium | |
| 88519 | If (10^4 * 3.456789)^14 is written as a single term, how many… | Medium | |
| 88820 | How many leading zeros (zeros after the decimal point but before the… | Medium | |
| 88858 | How many integers between 7000 and 8000 that have distinct digits and… | Medium | |
| 88894 | How many leading zeros (zeros after the decimal point but before the… | Medium | |
| 89152 | What is the difference between the largest number and the least number… | Medium | |
| 89164 | How many 13-digits number are Palindromic numbers | Medium | |
| 89177 | If two numbers x, a perfect square and y, a perfect cube… | Medium | |
| 89254 | There are 27 different three-digit integers that can be formed using only… | Medium | |
| 89360 | In a two-digit number, if it is known that its unit's digit… | Medium | |
| 89388 | How many times will the digit 8 be written when listing the… | Medium | |
| 89392 | What is the thousandths digit in the decimal equivalent of 62/5000 | Medium | |
| 89418 | What number is obtained by adding the units digits of 734^99 and… | Medium | |
| 89510 | How many odd numbers are possible between 1 to 1000000 | Medium | |
| 89558 | Find a two digit number, given that the sum of the digits… | Medium | |
| 89609 | If the number 52,1n6, where n represents the tens digit, is a… | Medium | |
| 89674 | A four-character password consists of one letter of the alphabet and three… | Medium | |
| 89885 | What is the units digit of (147^21)^48 | Medium | |
| 90024 | How many positive even integers less than 100 contain digits 5 or… | Medium | |
| 90133 | What is the sum of the digits of integer k, if k… | Medium | |
| 90150 | What is the 36th digit to the right of the decimal point… | Medium | |
| 90191 | If a and b are positive integers and x = 4^a and… | Medium | |
| 90305 | If log1087.5 = 5.9421, then the number of digits in (875)10 is | Medium | |
| 90306 | How many integers between 323,700 and 458,600 have tens digit 1 and… | Medium | |
| 90308 | Each digit 1 through 5 is used exactly once to create a… | Medium | |
| 90329 | Winners will be announced the following day at 9 AM Pacific/1 PM… | Medium | |
| 90404 | How many numbers with 1 different digits can be formed using only… | Medium | |
| 90413 | If the digits 33 in the decimal 0.00033 repeat indefinitely, what is… | Medium | |
| 90424 | What is the sum of the digits of integer k, if k… | Medium | |
| 90666 | How many leading zeros (zeros after the decimal point but before the… | Medium | |
| 90673 | what is the unit digit in (7^95-3^58) | Medium | |
| 90732 | The unit digit in the product 784*618*917*463 is | Medium | |
| 90739 | How many odd integers between 200 and 600 are there such that… | Medium | |
| 90876 | How many 7 digit number are there having the digit 3 three… | Medium | |
| 90938 | How many times will the digit 5 be written when listing the… | Medium | |
| 90954 | What is the units digit of 13^4*17^2*29^3 | Medium | |
| 91113 | How many 4 digit numbers can be formed with the digits 0… | Medium | |
| 91211 | What is the 21th digit to the right of the decimal point… | Medium | |