which of the following is not a binary operation of Q+
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Answer:
When you will multiply, add , subtract, any two real number the resulting
number will be real number, so option A and B are binary operations.
Also if a and b are real number then
a 2 +b 2
will be a real number, so option D is also binary operation
Check option 'C', If sign of product of a and b will be negative, then
ab
will not be real number,
Hence it is not a binary operation
Therefore option C is correct choice
Step-by-step explanation:
Given an example to show that ∗:N×N→N, given by (a,b)=a−b is not a binary operation.
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