If the symbol @ represents either addition or multiplication, which operation does it represent?
(1) a@b=b@a for all numbers a and b
(2) a@(b–c)=(a@b)–(a@c) for all numbers a, b, and c
Question: what is the operation @ ?
@ = + or *
As soon as you look at the questions, you will be reminded of the number properties Commutative and Distributive.
Commutative property =>valid for both, + as well as *, =>cant say, Not Suff
Distributive property=> Always valid for * -> Sufficient
Answer : B
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