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Let * be the binary operation defined on Q. Find which of the following binary operations are commutative
a * b = a + ab ∀ a, b ∈ Q

Pawan Prajapati , 4 Years ago
Grade 12
anser 1 Answers
Harshit Singh

Last Activity: 4 Years ago

Dear Student

a * b = a + ab

b * a = b + ab
So clearly, a + ab ≠ b + ab
Therefore, * is not commutative.

Thanks
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