| 81441 | In how many ways can 4 different resistors be arranged in series | Medium | AQuA | |
| 81822 | The number of arrangements that can be made with the letters of… | Medium | AQuA | |
| 82109 | In case M is the only individual sewing on committee B, which… | Medium | AQuA | |
| 82346 | In how many ways 7 boys and 7 girls can be seated… | Medium | AQuA | |
| 82566 | Zada has to distribute 15 choclates among 5 of her children Sana,ada,jaya,amir… | Medium | AQuA | |
| 85167 | If each digit in the set A = {1, 2, 3, 4… | Medium | AQuA | |
| 87870 | In how many different ways can the letters of the word ‘INDIGO’… | Medium | AQuA | |
| 88963 | In how many ways can a team of 11 be chosen out… | Medium | AQuA | |
| 90641 | In how many different ways can the letters of the word ‘HOPE’… | Medium | AQuA | |
| 90854 | Three students - 2 boys and 1 girls - are to sit… | Medium | AQuA | |
| 92264 | A store sells seven different kinds of shirts | Medium | AQuA | |
| 92297 | From a bunch of eight keys, three particular keys have to be… | Medium | AQuA | |
| 92917 | If each digit in the set A = {1, 2, 3, 4… | Medium | AQuA | |
| 92921 | If each digit in the set A = {1, 2, 3, 4… | Medium | AQuA | |
| 94403 | I came across this problem in the GMATprep software and got it… | Medium | AQuA | |
| 96323 | In how many ways the letters of the word TIME be arranged | Medium | AQuA | |
| 97356 | In how many different ways can the letters of the word LEADER… | Medium | AQuA | |
| 98228 | At a dinner party, 5 people are to be seated around a… | Medium | AQuA | |
| 98674 | A three digit number consists of 9,5 and one more number | Medium | AQuA | |
| 106580 | Counting Principles · Exercise 14 | Medium | OpenStax | |
| 106582 | Counting Principles · Exercise 16 | Medium | OpenStax | |
| 106584 | Counting Principles · Exercise 18 | Medium | OpenStax | |
| 106586 | Counting Principles · Exercise 20 | Medium | OpenStax | |
| 106588 | Counting Principles · Exercise 22 | Medium | OpenStax | |
| 106590 | Counting Principles · Exercise 24 | Medium | OpenStax | |
| 106592 | Counting Principles · Exercise 26 | Medium | OpenStax | |
| 106594 | Counting Principles · Exercise 28 | Medium | OpenStax | |
| 106596 | Counting Principles · Exercise 30 | Medium | OpenStax | |
| 106598 | Counting Principles · Exercise 32 | Medium | OpenStax | |
| 106600 | Counting Principles · Exercise 34 | Medium | OpenStax | |
| 106602 | Counting Principles · Exercise 36 | Medium | OpenStax | |
| 106604 | Counting Principles · Exercise 38 | Medium | OpenStax | |
| 106606 | Counting Principles · Exercise 40 | Medium | OpenStax | |
| 106614 | Counting Principles · Exercise 48 | Medium | OpenStax | |
| 106616 | Counting Principles · Exercise 50 | Medium | OpenStax | |
| 106618 | Counting Principles · Exercise 52 | Medium | OpenStax | |
| 106620 | Counting Principles · Exercise 54 | Medium | OpenStax | |
| 106624 | Counting Principles · Exercise 58 | Medium | OpenStax | |
| 106626 | Counting Principles · Exercise 60 | Medium | OpenStax | |
| 21412 | seven family members: 5 grandchildren (3 brothers and 2 sisters) and their… | Medium | AQuA | |
| 30858 | Carmelo and LeBron participate in a seven-person footrace on the basketball court… | Medium | AQuA | |
| 38628 | How many such pairs of digits are there in the number '5391246'… | Medium | AQuA | |
| 48642 | eight family members: 5 grandchildren (3 brothers and 2 sisters) and their… | Medium | AQuA | |
| 48871 | Bob is about to hang his 8 shirts in the wardrobe | Medium | AQuA | |
| 48985 | A certain game pays players in tokens, each of which is worth… | Medium | AQuA | |
| 53135 | If each permutation of the digits 1,2,3,4,5,6 are listed in the increasing… | Medium | AQuA | |
| 56135 | Sherlock Homes and Dr | Medium | AQuA | |
| 57117 | six family members: 5 grandchildren (3 brothers and 2 sisters) and their… | Medium | AQuA | |
| 57541 | A and B participate in a seven-person footrace on the basketball court… | Medium | AQuA | |
| 57591 | How many ways are there to lay four balls, colored red, black… | Medium | AQuA | |