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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 surjections from A into B is

A

P(n,2)

B

`2^(n)-2`

C

`2^(n)-1`

D

None of these

Text Solution

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The correct Answer is:
B
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