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Let f : {1, 2, 3} rarr {1, 2, 3] be a fu...

Let `f : {1, 2, 3} rarr {1, 2, 3]` be a function. Then the number of functions `g : {1, 2, 3} rarr {1, 2, 3}`. Such that f(x) = g(x) for atleast one `x in {1, 2, 3}` is

A

11

B

19

C

23

D

27

Text Solution

Verified by Experts

The correct Answer is:
B
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