Mathematics > 2000 > 45

JAMB UTME

If U1 = {x : x is an integer and 1 ≤ x ≤ 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

Answer: A

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