Mathematics · 2018
JEE Main · 15 April 2018, Shift 2 · Q86
A player X has a biased coin whose probability of showing heads is p and a player Y has a fair coin. They start playing a game with their own coins…
A player X has a biased coin whose probability of showing heads is p and a player Y has a fair coin. They start playing a game with their own coins and play alternately. The player who throws a head first is a winner. If X starts the game, and the probability of winning the game by both the players is equal, then the value of 'p' is :
Official answer
(2)
$\displaystyle \frac{1}{3}$
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JEE Main 2018 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.