Find the probability of getting exactly 9 heads if an unbiased coin is

1.	Find the probability of getting exactly 9 heads if an unbiased coin is tossed 20 times ?
A.	20C8 \(\rm \frac{1}{2}^{20}\)
B.	20C9 \(\rm \frac{1}{2}^{20}\)
C.	20C9 \(\rm \frac{1}{2}^{10}\)
D.	20C9 \(\rm \frac{1}{2}^{40}\)
Answer» C. 20C9 \(\rm \frac{1}{2}^{10}\)

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Find the probability of getting exactly 9 heads if an unbiased coin is tossed 20 times ?

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