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A fair coin is tossed a fixed number of times. If the probability of getting seven heads is equal to that of getting nine heads, the probability of getting two heads, is

A

`(15)/(2 ^(8))`

B

`(2)/(15)`

C

`(15)/(2 ^(13))`

D

`(4)/(9)`

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The correct Answer is:
C
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