Statistics And Probability Question 445
Question: A coin is tossed 3 times. The probability of getting exactly two heads is
[SCRA 1980; MNR 1979]
Options:
A) $ \frac{3}{8} $
B) $ \frac{1}{2} $
C) $ \frac{1}{4} $
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
-
Required probability = $ ^{3}C_2{{( \frac{1}{2} )}^{2}}( \frac{1}{2} )=\frac{3}{8} $ .
BETA
