Q. 45.0( 1 Vote )

Mark the correct A. 15/28

B. 2/15

C. 15/213

D. none of these

Answer :


P(getting a head)=

Probability of getting 7 heads = nC7 (1/2)n

Probability of getting 9 heads = nC9 (1/2)n

Both probabilities are equal if n=9+7=16

So probability of getting 4 heads =16C416

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