5P5 is the number of ways of picking 5 objects out of a group of 5 objects, where order matters. Whenever you select ALL of the objects and order matters, the formula for nPn is n! . Since 5! =5(4)(3)(2)(1)=120 , that answers the question at hand.

What is the permutation of 5?

Thus, for 5 objects there are 5! = 120 arrangements.) For combinations, k objects are selected from a set of n objects to produce subsets without ordering.

What is the value of 5 p2?

5P2 Gives 20 and 7C3 gives 35

Combinations, Permutations, and Factorials are used to help calculate the numbers of ways something can be done or ordered.