In the CAT exam, the concepts of permutations and combinations play a significant role in assessing a candidate's problem-solving abilities and logical reasoning skills.

The Mega Millions jackpot is so massive that it would theoretically be profitable to buy enough tickets to cover every one of the 302,575,350 possible combinations of Mega Millions numbers.

The rich world of permutation tests can be supplemented by a variety of applications where only some permutations are permitted. We consider two examples: testing independence with truncated data and ...