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JEE MATHEMATICS MCQ: PERMUTATIONS

1 Easy

1 of 1

Understanding +4 | -1

Let

S

be the set of all functions from the set

A

to the set

A

. If

n(A)=k

, then

n(S)

is

View answer and explanation

Correct option: B

k^k

Option B (

k^k

) is correct because each of the k elements in set A can be mapped to any of the k elements in set A, resulting in

k^k

possible functions.

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