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Let A = {1, 2, 3, …..., n} and B = {a, b...

Let A = {1, 2, 3, …..., n} and B = {a, b}. Then the number of surjection from A into B is

A

`nP_(2)`

B

`2^n-2`

C

`2^n-1`

D

none of these

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The correct Answer is:
B
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HIMALAYA PUBLICATION-SETS,RELATIONS AND FUNCTIONS-QUESTION BANK
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