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If U = {x : x is an integer and 1 \(\leq\) x \(\leq\) 20 E1 = {x : x is a multiple of ...

If U = {x : x is an integer and 1 \(\leq\) x \(\leq\) 20
E1 = {x : x is a multiple of 3}
E2 = {x : x is a multiple of 4}
and an integer is picked at random from U, find the probability that it is not in E2

A. 3/4
B. 3/10
C. 1/4
D. 1/20




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