Mathematics · 2019
JEE Main · 12 January 2019, Shift 2 · Q87
In a game, a man wins Rs. 100 if he gets 5 or 6 on a throw of a fair die and loses Rs. 50 for getting any other number on the die. If he decides to…
In a game, a man wins Rs. $\displaystyle 100$ if he gets $\displaystyle 5$ or $\displaystyle 6$ on a throw of a fair die and loses Rs. $\displaystyle 50$ for getting any other number on the die. If he decides to throw the die either till he gets a five or a six or to a maximum of three throws, then his expected gain/loss (in rupees) is :
Official answer
(4)
$\displaystyle 0$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.