Question

In a certain college, 75% of the students like chemistry, 20% like mathematics and 40% like physics. Further 15% like chemistry and mathematics, 30% like chemistry and physics, 10% like mathematics and physics. 5% like all the 3 subjects.
(A) Find the probability that a random student will like at least one of the 3 subjects.
(B) Find the probability that a student likes precisely 1 subject.

Answer 1

Answer:

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