If A and B are two events such that P (A) = 2/4, P (B) = 1/2 and P (A n B) = 3/8,
find P (not A and not B). Choose the most appropriate option:  A) A)2/8  B) B)3/8  C) C)4/8  D) D)5/13  E) E)6/8
P(not A and not B) = 1 - (P(A) + P(B) - P(AB))   which you might find somewhere in your text.   Substituting in our probabilities we get:   P(not A and not B) = 1 - (2/4 + 1/2 - 3/8)   P(not A and not B) = 1 - (5/8)   P(not A and not B) = 3/8.   3/8
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If A and B are two events such that P (A) = 2/4, P (B) = 1/2 and P (A n B) = 3/8,
find P (not A and not B).