A player tosses two coins he wins Rs.10 if 2 heads appears , Rs. 5 if 1 head appears and Rs.2 if no head appears. Find the expected winning amount and variance of winning amount.

A players tosses 2 fair coins. He wins Rs. 5 if 2 heads appear, Rs. 2 if 1 head appear and Rs. 1 if no head appears. Then his expected wining amount is

A player tosses 2 fair coins. He wins 5 if 2 heads apper , 2if 1 head appers and 1 if no head appers. Find his expected winning amount and variance of winning amount .

A player tosses 2 fair coins. He wins Rs. 5 if 2 heads appear, Rs. 2 if 1 head appear and Rs. 1 if no head appears, then variance of his winning amount is

A coin is tossed thrice. X denotes the no. of heads appeared. Find the mean and variance of X.

In a game 3 coins are tossed.A person is paid Rs.5, if he gets all head or all tail and be in supposed pay Rs.3 if he gets are head or 2 heads.What can be expert to win on an arrange per game.

Two coins are tossed simultaneously 300 times and it is found that two heads appeared 135 times, one head appeared 111 times and no head appeared 54 times. If two coins are tossed at random, what is the probability of getting (i) 2 heads (ii) 1 head (iii) 0 head?

A coin is tossed three xx,consider the following events.A: No head appears,B: Exactly one head appears and C: Atleast two appear.Do they form a set of mutually exclusive and exhaustive events?

A coin is tossed 200 times and head appeared 120 times. The probability of getting a head in this experiment is