
Grade 12th passMagical Mathematics[Interesting Approach]
A tosses an unbiased coin 3times If he gets a head all 3times he is to get a prize Rs.160/- along with his entry fee of rs.16/- oterwise he loses his entry fee, the mathematical expectation of his profit is...?
A tosses an unbiased coin 3times If he gets a head all 3times he is to get a prize Rs.160/- along with his entry fee of rs.16/- oterwise he loses his entry fee, the mathematical expectation of his profit is...?




