Question

Which of the following is the definition for permutation?

Answer 1

Answer:

The answer is D. Selections of objects in which the order of the objects matters.

Step-by-step explanation:

Permutation is an arrangement of all or part of a set of objects, with regard to the order of the arrangement.

The formula for permutation: A permutation is the choice of (r) things from a set of (n) things without replacement and where the order matters. Formula-  

$nPr= \frac{n!}{(n-r)!}$

Permutation can be classified in three different categories:

• Permutation of (n) different objects (when repetition is not allowed)

• Repetition, where repetition is allowed

• Permutation when the objects are not distinct (Permutation of multi sets)