SOLUTION: Find the inidicated product: Let A = (3,4) and B =(x,y), determine n(A x B)

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Question 833882: Find the inidicated product:
Let A = (3,4) and B =(x,y), determine n(A x B)
Answer by MathLover1(20850) About Me  (Show Source):
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Let A = (3,4) and B =(x,y), determine n(A x B)
recall that
AxB = {(a,b) | a Î A and b Î B };
so, AxB = {(3,x), (3,y),(4,x),(4,y)}
and
n(A x B)=4
or this way:
n(A x B) = n(A) x n(B)
In this case, n(A) = 2, n(B) = 2, n(A x B) = 2*2=4.