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Question

If
A={x:x is multiple of 10 , x < 20}
B={x:x is multiple of 5, x <15}
Find
n(A)- n(B)??
4 years ago

Answers

oobleck
huh? really?
Assuming x is a positive integer, then
n(A) = 1
n(B) = 2
4 years ago

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