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Let S = {1, 2, 3, 4). The number of func...

Let `S = {1, 2, 3, 4).` The number of functions `f: S->S.`Such that `f(i) le 2i` for all `i in S` is

A

32

B

64

C

128

D

256

Text Solution

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The correct Answer is:
C
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