Question

Please answer question 2

Answer 1

your answer is A
I hope it is Your answer

Answer 2

Here, n(AxB) = 9 and using the given elements of AxB, it is clear that

A={a,b,c} and B={1,-1,c}.   Also, n(A)= 3 and n(B)= 3.

That's supposed to help ;)