Q.

The number of subsets of a set containing n distinct object is

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a

nC1+nC2+nC3+…+nCn−1

b

2n−1

c

nC0+nC1+…+nCn

d

2n+1

answer is C.

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Detailed Solution

Use: The number of subsets containing exactly r elements is n  nCr
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