Mathematics

Question

(a) Two numbers are chosen at random from 1, 2 and 3. What is the probability that their sum is an odd number if repetition is not allowed?

(b) If A and B are two events such that P(A) =1/4 , P(B) = 1/2 and P(A ⋂ B)  = 1/8 , find P (A ⋃ B)

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