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If the set $A$ has 3 elements and the set $B=\{3,4,5\}$, then find the number of elements in $(A \times B)$.
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Verified Answer
We have $n(A)=3, n(B)=3$
Thus $n(A \times B)=n(A), n(B)=3 \times 3=9$
Hence, number of elements in $A \times B$ is 9 .
Thus $n(A \times B)=n(A), n(B)=3 \times 3=9$
Hence, number of elements in $A \times B$ is 9 .
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