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about to only mathematics...

about to only mathematics

A

`(1)/(3)`

B

`(2)/(3)`

C

`(1)/(2)`

D

`(.^(25)C_(13))/(.^(51)C_(13))`

Text Solution

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The correct Answer is:
B
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OBJECTIVE RD SHARMA ENGLISH-PROBABILITY -Section II - Assertion Reason Type
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  2. .Let X be a set containing n elements. If two subsets A and B of X are...

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  4. Let A, B and C be three events associated to a random experiment. St...

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  5. An urn contains m white and n black balls. A ball is drawn at random a...

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  8. Aa n dB toss a fair coin each simultaneously 50 times. The probability...

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  9. A bag contains (2n+1) coins. It is known that n of these coins have a ...

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  11. Three dice are thrown simultaneously. What is the probability of ge...

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  12. Probability that a student will succeed in I.I.T. Entrance test is 0.2...

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  13. A speaks the truth 4 out of 5 times. He throws a die and reports that ...

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  14. In an entrance test, there are multiple choice questions. There are...

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  15. A letter is known to have come either from LONDON or CLIFTON. On the ...

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  16. turn contains 6 white and 4 black balls. A fair dice is rolled and tha...

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  17. An urn contains five balls. Two balls are frawn and are found to be wh...

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  18. about to only mathematics

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  19. A biased die is tossed and the respective probabilities for various fa...

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  20. In a bag there are three tickets numbered 1, 2, 3. A ticket is drawn a...

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