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State whether the statements in True or False.

If some or all of n objects are taken at a time, the number of combinations is $2^n-1$ .

Answers (1)

True.

If some or all objects taken at a time, then the number of combinations would be

$n_{C_{2}}+n_{C_{2}}+\cdots \ldots+n_{C_{n}}=2^{n}-1$

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infoexpert21

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