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A student is allowed to select atmost n books from a collection of (2n+1 ) books if the total number of ways in which he can select book is 63, then n=

A

4

B

3

C

7

D

8

Text Solution

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )
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  2. The number of functions that can be defined from a set containing 20 e...

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  3. A set contains (12) elements . The number of subsets of the set ...

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  4. A Set contains 20 elements The number of subsets of the set wh...

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  5. A student is allowed to select atmost n books from a collection ...

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  6. A set contains (12) elements . The number of subsets of the set ...

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  7. How many mulitiples of 2 lie between 10 and 250?

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  8. If n objects are arranged in a row then the number of ways of s...

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  9. The position vector of a point p is r = x hati + y hatj + z ha...

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  10. Let a = hati + hatj + hatk and let r be a variable vector s...

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  11. The number of integers x,y,z, w such that x +y+z+w=20 and x , y,...

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  12. How many mulitiples of 3 lie between 10 and 250?

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  13. Sum of all three digit number ( no digits being zero ) having ...

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  14. In How many ways 4 sovereining be given aways when there are ...

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  15. The number of ways of selecting 10 balls out of an unlimited n...

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  16. The number of ways in which and examiner can assign 20 maks to...

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  17. In how many ways can an examiner assifn 30 marks to 8 questions...

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  18. The number of ways in which 13 gold coins can be distributed ...

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  19. The number of ways in which five different prizes can distribu...

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  20. The number of ways of distributing 8 indentical balls in 3 dis...

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