alleryIf $n(A)=3$ and $n(B)=2$, then $n(A\times B)$ equals:
A6
B5
C9
D8
Answer & Solution
Correct answer: A. 6
We have n(A×B) = n(A)·n(B).
That is n(A×B) = 3·2.
So n(A×B) = 6.
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