1.

The probability that a can solve a problem is 2/3 and the probability that b can solve the same problem is 3/5. Find the probability that atleast one of a and b will be able to solve the problem.

Answer»

Answer:

13/15

Step-by-step explanation:

CASE 1: A solves the PROBLEM and B does not

Probability = 2/3 * (1-3/5) = 4/15

Case 2: B solves the problem and A does not

Probability = (1-2/3) * 3/5 = 1/5

Case 3: Both A and B SOLVE the problem

Probability = 2/3 * 3/5 = 2/5

Required probability = Case 1 + Case 2 + Case 3 = 4/15 + 1/5 + 2/5 = 13/15



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