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In a high school graduating class of 100 students, 54 studied mathematics
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In a high school graduating class of 100 students, 54 studied mathematics, 69 studied history, and 35 studied both mathematics and history. If one of these students is selected at random, find the probability that
(a) the student took mathematics or history;
(b) the student did not take either of these classes;
(c) the student took history but not mathematics.
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[Solved] In a high school graduating class of 100 students, 54 studied mathematics
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- Submitted On 15 Jul, 2020 07:45:11
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Answer:
(a) Event L or T is the event that the student has at least one of items between laptop or tablet.
(b) 0.85
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P(L or T) = P(L) +P(T) – P(L and T) = (800+300-250)/1000 = 0.85
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