Let A be a set consisting of 10 elements...

Let A be a set consisting of 10 elements. The number of non-empty relations from A to A that are reflexive but not symmetric is

A

`2^(89) -1`

B

`2^(89) - 2^(45)`

C

`2^(45) -1`

D

`2^(90) - 2^(45)`

Verified by Experts

The correct Answer is:

D

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