Published by:
CGP EDU Academic Team
Published on: August 13, 2026
A coin is tossed three times. Let X denote the number of times a tail follows a head. If 
and 
denote the mean and variance of 
, then the value of 
is :
Text Solution
Verified by ExpertsThe correct answer is:
B
Probability distribution
0 | 1 | |
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