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A couple has two childen . find the pro...

A couple has two childen . find the probability that both are boys ., if it is known that the older child is a boy .

A

`3/8`

B

`1/2`

C

`5/8`

D

`3/4`

Text Solution

Verified by Experts

The correct Answer is:
B
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QUANTUM CAT-PROBABILITY-QUESTION BANK
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  2. A couple has two childen . Find the probability that both are bo...

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  6. A bag contains 3 red and 4 black balls and another bag has 4 red and 2...

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  7. A bag contains 3 red and 4 black balls and another bag has 4 red and 2...

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  8. Two balls are drawn from an urn containing 2 white; 3 red and 4 black ...

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  9. A bag contains 6 red and 9 blue balls. Two successive drawing of four...

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  10. An urn contains 4 white 6 black and 8 red balls. If 3 balls are drawn ...

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  11. Two numbers are selected at random from integers 1 through 9. If th...

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  12. A box contains 25 tickets, numbered 1, 2, 3, .. 25. A ticket is drawn ...

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  13. A coin is tossed twice and all 4 outcomes are equally likely ....

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  14. A bag contains 10 red balls and 10 green balls , Two balls ar...

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  15. (for explantion of Baye's rule ) three boxes contain 6 red , ...

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  16. Let A and B be independent events such that P(A) =0.6 and P(B ) =0...

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  17. Let A and B be independent events such that P(A)=0.6 and P(B)=0.5 find...

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  18. Let A and B be independent events such that P(A)=0.6 and P(B)=0.6 find...

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  19. Let A and B be independent events such that P(A)=0.6 and P(B)=0.7 find...

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  20. If A and B are independent events such that P(A)=0.4 and P(B)=0.5, the...

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