Statistics And Probability Question 475
Question: In a simultaneous toss of four coins, what is the probability of getting exactly three heads
[AI CBSE 1979]
Options:
A) $ \frac{1}{2} $
B) $ \frac{1}{3} $
C) $ \frac{1}{4} $
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
-
Required probability $ ={}^{4}C_3.{{( \frac{1}{2} )}^{3}}( \frac{1}{2} )=\frac{1}{4}. $
BETA
