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Question

If n1C3+n1C4>nC3, then the least value of n is

A
7
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B
8
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C
9
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D
10
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Solution

The correct option is B 8
Using nCr+nCr1=n+1Cr
n1C3+n1C4=nC4>nC3
n>4+3=7, where n is a natural number
Hence, least possible value of n is 8.

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