Question

plz explain permutation and combinaton

Answer 1

Permutations are the different arrangements of a given number of things by taking some or all at a time.
Each of the different groups or selections formed by taking some or all of a number of objects is called a combination.

For permutations, the problems can be like "What is the number of permutations the can be made", "What is the number of arrangements that can be made", "What are the different number of ways in which something can be arranged", etc.

For combinations, the problems can be like "What is the number of combinations the can be made", "What is the number of selections the can be made", "What are the different number of ways in which something can be selected", etc.

Answer 2

Answer:

Permutations and combinations, the various ways in which objects from a set may be selected, generally without replacement, to form subsets. This selection of subsets is called a permutation when the order of selection is a factor, a combination when order is not a factor.

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