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Suppose that 5% of men and 0.25% of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume that there are equal number of males and females.

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The correct Answer is:
`(20)/(21)`
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NCERT BANGLISH-PROBABILITY-MISCELLANEOUS EXERCISE ON CHAPTER 13
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  3. Suppose that 5% of men and 0.25% of women have grey hair. A grey haire...

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  4. Suppose that 90% of people are right-handed. What is the probability t...

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  17. Choose the correct answer: If A and B are two events such that P(A) ...

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