A and B toss a coin alternately on the understanding that the first to obtain heads wins the toss.The probability that A wins the toss.

A and B toss a coin alternately till one of them gets a head and wins the game. If A starts the game, find the probability that B will win the game.

A and B toss coin alternately till one of them gets a head and wins the game.If A starts first,find the probability the B will win the game.

Three coins are tossed .Find the probability of no heads .

(i) A and B toss a coin alternately till one of them tosses a head and wins the game. If A starts the game, find their respective probability of winning. (ii) A and B throw a coin alternately till one of them gets a 'head' and wins the game. If A starts the game, find the probability of his winning at his third throw.

A fair die is tossed repeatedly. A wins if it is 1 or 2 on two consecutive tosses and B wins if it is 3,4,5 or 6 on two consecutive tosses. The probability that A wins if the die is tossed indefinitely is

Three coins are tossed .Find the probability of heads .

A fair die is tossed repeatedly.A wins if if is 1 or 2 on two consecutive tosses and B wins if it is 3,4,5 or 6 on two consecutive tosses.The probability that A wins if the die is tossed indefinitely is 1/3 b.5/21 c.1/4 d.2/5

A,B and C toss a coin one after another. Who ever gets head list will win the game.If A starts the game the probability of Al's winning is

A tosses 2 coines while B tosses 3. The probability that B obtains more number of heads is