| 74854 | What is the 23th digit to the right of the decimal point… | Medium | |
| 74946 | What is the units digit of (63^4)(41^7)(99^9) | Medium | |
| 74976 | How many times digit 6 is used while writing numbers from 80… | Medium | |
| 75047 | How many positive even integers less than 100 contain digits 5 or… | Medium | |
| 75112 | A construction company wants to number new houses using digit plates only | Medium | |
| 75259 | In a two-digit number, if it is known that its unit's digit… | Medium | |
| 75575 | How many integerskgreater than 100 and less than 1200 are there such… | Medium | |
| 75654 | __2A x__B ____ CC In the multiplication problem above, A, B, and… | Medium | |
| 75735 | What are the last two digits of 63*35*37*82*71*412 | Medium | |
| 75941 | How many integers k greater than 100 and less than 700 are… | Medium | |
| 76031 | How many pages the book have, if total 309 digits are used… | Medium | |
| 76035 | if log 4 = 0.60205, the number of digits in 4128 is | Medium | |
| 76102 | AB +BA ___ 181 In the addition problem above, A and B… | Medium | |
| 76261 | A “palindromic integer” is an integer that remains the same when its… | Medium | |
| 76417 | What is the thousandths digit in the decimal equivalent of 66/5000 | Medium | |
| 76757 | How many different 4 digit numbers can be formed from the number… | Medium | |
| 76850 | What is the 14th digit to the right of the decimal point… | Medium | |
| 76951 | If (10^86) – 23 is written as a base 10 integer, which… | Medium | |
| 76984 | What is the difference between the largest number and the least number… | Medium | |
| 77060 | X and Y are both integers | Medium | |
| 77089 | __2A x__B ____ CC In the multiplication problem above, A, B, and… | Medium | |
| 77104 | A bar over a sequence of digits in a decimal indicates that… | Medium | |
| 77233 | How many different 6 digit numbers can be formed from the number… | Medium | |
| 77236 | 1,236 1,263 1,326 | Medium | |
| 77272 | Find the ones digit of 73^300 | Medium | |
| 77277 | How many positive integers less than 500 can be formed using the… | Medium | |
| 77305 | What is the units digit of 17^83 × 13^82 × 11^83 | Medium | |
| 77308 | How many different three-digit multiples of 5 can be composed of digits… | Medium | |
| 77392 | What is the units digit of 32 | Medium | |
| 77567 | What is the tens digit of 7^545 | Medium | |
| 77683 | Of the three-digit integers greater than 800, how many have distinct digits… | Medium | |
| 77903 | The difference between a two-digit number and the number obtained by interchanging… | Medium | |
| 78279 | If each of 4 digit code is formed of integers from 1… | Medium | |
| 78285 | What is the units digit of (147^25)^49 | Medium | |
| 78534 | if log 2 = 0.30103, the number of digits in 2128 is… | Medium | |
| 78587 | How many integers between 1 and 10^17 are such that the sum… | Medium | |
| 78623 | What is the 16th digit to the right of the decimal point… | Medium | |
| 78741 | Meena wrote all the numbers from 1 to 69,999 inclusive | Medium | |
| 78786 | If n = (33)^43 + (23)^33 what is the units digit of… | Medium | |
| 78802 | A warehouse is labeling computer inventory with 3-digit codes | Medium | |
| 79032 | The unit digit in the product 3421*6721*4584*6784 is | Medium | |
| 79112 | The security gate at a storage facility requires a five-digit lock code | Medium | |
| 79127 | What is the units digit of (5!*4 | Medium | |
| 79181 | The sum of digits of a two digit number is 11,The difference… | Medium | |
| 79231 | If the digits 27 in the decimal 0.00027 repeat indefinitely, what is… | Medium | |
| 79282 | What is the units digit of the product of the first 100… | Medium | |
| 79311 | When 10 is subtracted from a number, it reduces to seven-twelve of… | Medium | |
| 79420 | How many digits are required to number a book containing 240 pages | Medium | |
| 79732 | If k is the sum of the digits of integer m, and… | Medium | |
| 79796 | The total number of digits used in numbering the pages of a… | Medium | |