If the set A has 3 elements and the set B = {3, 4, 5}, then find the number of elements in (A × B).

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Solution

The correct option is C 9
Given: n(A) = 3 and n(B)=3
$∵$ n(A x B) = n(A) x n(B)
= 3 x3
= 9
Hence, number of elements in
A x B = 9.

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