Question

‘A’ and ‘B’ play a game involving tossing a coin 4

Total number of outcomes 2 4 16 Number of favourable outcomes exactly 2 heads C4,2 6 Probability that A wins 616 38

times. ‘A’ wins if exactly two heads appear. Otherwise, ‘B’ wins. Find the probability that ‘A’ wins the game.

A 3/8

B 1/2

C 5/8

D 1/4

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Solution