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Probability

RS Aggarwal

CBSE

Grade 12

Question:

Probability of solving a specific problem independently by A and B are $1/2$ and $1/3$ respectively. Probability that problem is solved is:
(a) $2/3$
(b) $1/6$
(c) $1/2$
(d) $5/6$

Step-by-Step Solution

Key Concept: P(Solved) = 1 - P(A')P(B') = 1 - (1/2)(2/3) = 1 - 1/3 = 2/3.

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Correct Answer: $2/3$

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