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The number of air molecules in a (5m xx ...

The number of air molecules in a `(5m xx 5m xx 4m)` room at standard temperature and pressure is of the order of

A

`6 xx 10^(23 )`

B

`3 xx 10^(24 )`

C

`3 xx 10^(27)`

D

`6 xx 10^(30 )`

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The correct Answer is:
C
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