Let \[R=\{x|x\in N,x\] is a multiple of 3 and \[x\le 100\}\] \[S=\{x|x\in N,\,\,x\] is a multiple of 5 and \[x\le 100\}\] What is the number of elements in \[(R\times S)\cap (S\times R)\]

Let \[R=\{x|x\in N,x\] is a multiple of 3 and \[x\le 100\}\] \[S=\{x|x

1.	Let \[R=\{x\|x\in N,x\] is a multiple of 3 and \[x\le 100\}\] \[S=\{x\|x\in N,\,\,x\] is a multiple of 5 and \[x\le 100\}\] What is the number of elements in \[(R\times S)\cap (S\times R)\]
A.	36
B.	33
C.	20
D.	6
Answer» B. 33

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Let \[R=\{x|x\in N,x\] is a multiple of 3 and \[x\le 100\}\] \[S=\{x|x\in N,\,\,x\] is a multiple of 5 and \[x\le 100\}\] What is the number of elements in \[(R\times S)\cap (S\times R)\]

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