Arithmetic Ability
 Probability

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Q.

Two brother X and Y appeared for an exam. The probability of selection of X is 1/7 and that of B is 2/9. Find the probability that both of them are selected.

View Answer

Correct choice: C

Explanation:

Let A be the event that X is selected and B is the event that Y is selected. P(A) = 1/7, P(B) = 2/9. Let C be the event that both are selected. P(C) = P(A) × P(B) as A and B are independent events: = (1/7) × (2/9) = 2/63
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