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JAMB Mathematics 2017 Paper

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Question : 3

Total: 44

If U = {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

3
4
3
10
1
4
1
20

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