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josue88
In a shop there are 40 customers, 12 of whom will make a purchase. If three customers are selected, one at a time, at random, what is the probability that all will make a purchase? A. 0.0223 B. 0.1426 C. 0.1142 D. 0.0335
is it A. 0.0223 reqd prob = C(12,3)/C(40,3)
or 12/40 *11/39 *10/38 = 0.0223