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The number of all possible selections of...

The number of all possible selections of one or more questions from 10 given questions, each question having an alternative is :

A

310

B

`2^(10)-1`

C

`3^(10)-1`

D

`2^(10)`

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The correct Answer is:
C
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OBJECTIVE RD SHARMA ENGLISH-PERMUTATIONS AND COMBINATIONS-Exercise
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