Question

The probability of obtaining $2$ heads when an unbiased coin is tossed $5$ times is

• A. $\frac{5}{8}$
• B. $\frac{4}{9}$
• C. $\frac{5}{16}$
• D. $\frac{4}{16}$

Answer 1

Answer: (C)

$\frac{5}{16}$

The probability of getting $2$ heads in $5$ coin tosses $=5C_2\times (\frac{1}{2}{)}^5=\frac{5}{16}$