A family has two children. What is the p...

A family has two children. What is the probability that both the children are boys given that at least one of them is a boy ?

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The correct Answer is:

`(1)/(3)`

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NCERT TAMIL-PROBABILITY-MISCELLANEOUS EXERCISE ON CHAPTER 13

A family has two children. What is the probability that both the child...
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A and B are two events such that P(A) ne 0. Find P(B/A) if (i) A is a ...
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A couple has two children. Find the probability that both children are...
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Suppose that 5% of men and 0.25% of women have grey hair. A grey haire...
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Suppose that 90% of people are right- handed. What is the probability ...
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An urn contains 25 balls of which I0 balls bear a mark 'X' and remaini...
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In a hurdle race, a player has to cross 10 hurdles. The probability th...
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A die is thrown again and again until three sixes are obtained. Find t...
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If a leap year is selected at random, what is the chance that it will ...
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An experiment succeeds twice as often as it fails. Find the probabilit...
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How many times must a man toss a fair coin so that the probability of ...
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In a game, a man wins a rupee for a six and loses a rupee for any othe...
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Suppose we have four boxes A, B, C and D containing coloured marbles a...
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Assume that the chances of a patient having a heart attack is 40%. It ...
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If each element of a second order determinant is either zero or one, w...
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An electronic assembly consists of two sub-systems, say, A and B. From...
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Bag I contains 3 red and 4 black balls and Bag II contains 4 red and 5...
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Choose the correct answer: If A and B are two events such that P(A) ...
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Choose the correct answer: If P(A|B) gt P(A), then which of the foll...
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Choose the correct answer: If A and B are any two events such that P...
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