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A student is allowed to select atlest one an atmost n books from a collection of (2n+1) books. If the total number of ways in which he can select books is 63, find the value of n.

A

6

B

3

C

4

D

none of these

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The correct Answer is:
B
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OBJECTIVE RD SHARMA ENGLISH-PERMUTATIONS AND COMBINATIONS-Exercise
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  8. The number of ways in which four letters can be selected from the word...

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  9. find the number of arrangements which can be made out of the letters o...

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  11. The total number of ways in which 4 boys and 4 girls can form a line, ...

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  13. A code word consists of three letters of the English alphabet followed...

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  14. Find the number of words formed by permuting all the letters of the ...

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  15. A father with 8 children takes 3 at a time to the Zoological Gardens, ...

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  16. A man has 8children to take them to a zoo. He takes thre of them at a ...

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  17. If the letters of the word ‘LATE’ be permuted and the words so perfo...

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  18. The total number of ways of arranging the letters AAAA BBB CC D E F in...

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