A and B throw a coin in turn till one of them gets a tail and wins the game .if A starts the game find the probability of B winning the game.
URGENT PLS....
Answers
Answered by
0
Answer:
Please refer to the images for the answer ...
Attachments:
Answered by
0
Answer:
1/3
Step-by-step explanation:
Let Probability of getting a tail is = 1/2
B can win in following cases.
1. A gets head, B gets tail
2. A gets head, B gets head, A gets head, B gets tail.
And so on....
Hence,
The total probàblity B win will be
1/2×1/2 + 1/2×1/2×1/2×1/2 + (1/2)⁶ + ...
Applying sum of Infinite G.P.
= 1/4/ (1 - 1/4) = 1/4/3/4 = 1/3
Similar questions