Question

Choose the correct option.
Two friends X and Y appeared for an audition. The probability of selection of X is
2/5 and that of Y is 1/7. Find the probability that both of them are selected.​

Answer 1

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.?

This is a Standard problem of .

Here, The probability for selection of X = 1/7

and probability for selection of Y = 2/9

Now, The probability for selection of both given that the selection is already done is :

P(Required event) = (1/7 * 2/9)/(1/7 + 2/9)

i.e−−>P=2/15

So, the final probability of selecting both X and Y is: 2/15

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