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Which of the following is not a binary o...

Which of the following is not a binary operation on R?

A

`a ** b=ab`

B

`a ** b= a-b`

C

`a ** b= sqrt(ab)`

D

`a ** b = sqrt(a^(2) + b^(2))`

Text Solution

Verified by Experts

The correct Answer is:
C
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