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A fair coin is tossed a fixed number tim...

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

A

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

B

`(2)/(15)`

C

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

D

`(4)/(15)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-RANDOM VARIABLE -PRACTICE EXERCISE
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  6. A coin is biased so that the probability of falling head when tossed i...

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  17. If 2% of a given lot of manufactured parts are defective , then the pr...

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  19. For the binomial distribution (a + p)^(n) = ((1)/(2) + (1)/(2))^(10)...

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