| 96298 | The difference between the squares of two consecutive odd integers is a… | Medium | |
| 19176 | The sum of the digits of a two-digit number is 15 and… | Medium | |
| 19308 | FOG + FOG + FOG + FOG = 1464 | Medium | |
| 19360 | How many integers between 100 and 600 are there such that their… | Medium | |
| 19421 | What are the last two digits of 55*34*86*47*23*51 | Medium | |
| 19443 | If log 2= 0.030103, the number of digits in 264 is | Medium | |
| 19501 | If the tens digit of positive integer x is 4 and the… | Medium | |
| 19858 | If a and b are positive integers and x = 5^a and… | Medium | |
| 19882 | The difference between a two-digit number and the number obtained by interchanging… | Medium | |
| 20549 | What is the units digit of 28 | Medium | |
| 20684 | The units digit of (35)^(87) + (93)^(55) is | Medium | |
| 20752 | What is the units digit of (22^4)(16^3)(41^8) | Medium | |
| 20780 | How many 3-digit positive integers are there, where each digit is positive… | Medium | |
| 20890 | If all of the telephone extensions in a certain company must be… | Medium | |
| 20956 | The units digit of (35)^(87) + (93)^(47) is | Medium | |
| 20967 | Find the ones digit of 73^353 | Medium | |
| 20990 | The unit digit in the product (891 * 781 * 912 *… | Medium | |
| 21199 | If p=25*343*9/1575, how many digits are in p | Medium | |
| 21357 | If a and b are positive integers and x = 16^a and… | Medium | |
| 22060 | Of the three-digit integers greater than 400, how many have two digits… | Medium | |
| 22103 | If a and b are positive integers and x = 9^a and… | Medium | |
| 22212 | What is the unit digit in 7^105 | Medium | |
| 22231 | What is the 8th digit to the right of the decimal point… | Medium | |
| 22399 | What is the units digit of the expression 14^7−19^4 | Medium | |
| 22401 | A bar over a sequence of digits in a decimal indicates that… | Medium | |
| 22467 | The unit digit in the product (635 * 767 * 984 *… | Medium | |
| 23107 | What is the two-digit number whose first digit is a and the… | Medium | |
| 23213 | Of the three-digit integers greater than 500, how many have two digits… | Medium | |
| 23499 | A four-character password consists of one letter of the alphabet and three… | Medium | |
| 23628 | A warehouse is labeling computer inventory with 3-digit codes | Medium | |
| 24086 | The units digit of (35)^(87) + (93)^(51) is | Medium | |
| 24300 | A four-character password consists of one letter of the alphabet and three… | Medium | |
| 24342 | How many times will the digit 7 be written when listing the… | Medium | |
| 24493 | How many 5 digit number contain number 3 | Medium | |
| 24597 | The difference between a two-digit number and the number obtained by interchanging… | Medium | |
| 24611 | How many leading zeros (zeros after the decimal point but before the… | Medium | |
| 24767 | How many odd numbers are possible between 1 to 100000000 | Medium | |
| 24980 | What is the units digit of (52^5)(37^3)(71^9) | Medium | |
| 25104 | Of the three-digit integers greater than 800, how many have two digits… | Medium | |
| 25190 | What is the units digit of 63^3 * 17^3 * 49^3 | Medium | |
| 25217 | If a two-digit positive integer has its digits reversed, the resulting integer… | Medium | |
| 25282 | Will must choose a 2-character computer password, consisting of 1 letter from… | Medium | |
| 25396 | What is the units digit of 18 | Medium | |
| 25417 | What is the thousandths digit in the decimal equivalent of 43/5000 | Medium | |
| 25656 | The unit digit in the product (624 * 708 * 913 *… | Medium | |
| 25717 | How many positive integers less than 9,000 are there in which the… | Medium | |
| 25781 | If the two-digit integers A and B are positive and have the… | Medium | |
| 25811 | What is the 26th digit to the right of the decimal point… | Medium | |
| 26022 | How many integerskgreater than 100 and less than 700 are there such… | Medium | |
| 26178 | What is the difference between the largest number and the least number… | Medium | |