The number of all onto functions from the set 1, 2, .......n to itself is Option 1: 2^n Option 2: n^2 Option 3: n! Option 4: (2n)!

The answer is 'n!'. View full solution:

CUET Mathematics - The number of all onto functions from the set 1, 2, .......n to itself is | PYQs + Solutions

CUET Mathematics 2023 23 May Shift 3

Algebra

Easy

$2^n$

$n^2$

(2n)!

✅ Correct Option: 3

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