A salesman is known to sell a product in 3 out of 5 attempts.While another salesman in 2 out of 5 attempts.Find the probability that

(a) no sales will happen

(b)either of them will succeed in selling the product.

Let A be the event that the first salesman will sell the product and B be the event that the second salesman will sell the product.

Given

(1) Probability that no sales will happen = P(A') × P(B')

(2) Probability that either of the salesman will succeed in selling the product = P(A') × P(B) + P(A) × P(B')

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