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A fair coin is tosed 3 times. A person r...

A fair coin is tosed 3 times. A person receives `"Rs. "X^(2)` if he gets X number of heads in all. His expected gain is

A

Rs. 9

B

Rs. 3

C

Rs. 8

D

Rs. 2

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The correct Answer is:
B
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  13. The p.m.f. of a r.v. X is P(x)={{:(kx","x=1","2","3),(0", otherwise"):...

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  14. The p.m.f. of a r.v X is P(x)={{:(kx","x=1","2","3),(0", otherwise"):}...

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  16. If X denotes the number obtained on the uppermost face when a fair die...

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