Let n(A) denotes the number of elements in set A. If n(A) =p and n(B) = q, then how many ordered pairs (a, b) are there with a ∈ A and b ∈ B ?

Let n(A) denotes the number of elements in set A. If n(A)

1.	Let n(A) denotes the number of elements in set A. If n(A) =p and n(B) = q, then how many ordered pairs (a, b) are there with a ∈ A and b ∈ B ?
A.	p2
B.	p x q
C.	p + q
D.	2 pq
Answer» C. p + q

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