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If n is a positive integer, then ^nC1+^n...

If n is a positive integer, then `^nC_1+^nC_2+....+^nC_n` is equal to

A

`2^n`

B

`2^n-1`

C

`2^(n-1)`

D

`1-2^n`

Text Solution

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The correct Answer is:
B
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PATHFINDER-BINOMIAL THEOREM AND PRINCIPLE OF MATHEMATICAL INDUCTION-QUESTION BANK
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