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There are 10 lamps in a hall. Each one o...

There are 10 lamps in a hall. Each one of them can be switched on independently. No. of ways in which the hall can be illuminated is

A

`2^(10)-1`

B

`2^(9)-1`

C

`2^(10)`

D

`2^(9)`

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The correct Answer is:
A
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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-EXERCISE-II
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