Permutation and Combination is one such topic in which almost every student fumbles. Questions from this topic appear in a significant proportion in almost all the MBA entrance exams (CAT, XAT, IIFT, etc.). Every question in Permutation and Combination has more than one method by which it can be solved and that makes it even more confusing. However, the catch is to solve the question in the least time span. This topic can be linked with another equally important topic - Probability. The basic concepts are the same.