JEE 2025 — Mathematics PYQ
JEE | Mathematics | 2025A coin is tossed three times. Let denote the number of times a tail follows a head.
If and denote the mean and variance of , then the value of
is:

A coin is tossed three times. Let denote the number of times a tail follows a head.
If and denote the mean and variance of , then the value of
is: