Problems on Permutations and Combinations : CAT Quantitative Aptitude This article takes you through some of the applications of the concepts that may be tested in Permutations and Combinations.

Practice problems related to real-life situations where permutations and combinations are applicable. This can include problems related to seating arrangements, distribution, and committee formations.

Combinations Concept and Problems to crack CAT Quantitative Aptitude This article deals with the cases in Combinations and should be viewed as a continuation from Permutations as well as serves as ...

Permutations vs. Combinations Both permutations and combinations involve a group of items. For permutations, the order of the data matters.

Combination of encryption and decryption for secure communication is an application. Here, the authors are using permutation and substitution technique to make the people’s data more secure.