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Let A and B be two sets consisting of m ...

Let A and B be two sets consisting of m and n elements respectively `(n ge m)` . The number of one-one functions from A to B is

A

`n^(m)`

B

`n C_(n)`

C

`text "n C_(text (m )) xx m!`

D

`m^(prime prime)`

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The correct Answer is:
C
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