1.

A and B are two sets having 3 elements in common. If n(A)=5, n(B)=4, then what is `n(AxxB)` equal to ?

Answer» Correct Answer - D
Here, n(A) = 5 and n(B) = 4
`therefore n(AxxB)=5xx4=20 " "[because n(A)=m, n(B)=nimpliesn(AxxB)=mn]`


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