Mathematics · 2019
JEE Main · 10 January 2019, Shift 1 · Q87
An unbiased coin is tossed. If the outcome is a head then a pair of unbiased dice is rolled and the sum of the numbers obtained on them is noted. If…
An unbiased coin is tossed. If the outcome is a head then a pair of unbiased dice is rolled and the sum of the numbers obtained on them is noted. If the toss of the coin results in tail then a card from a well-shuffled pack of nine cards numbered $\displaystyle 1,2,3, \ldots, 9$ is randomly picked and the number on the card is noted. The probablity that the noted number is either $\displaystyle 7$ or $\displaystyle 8$ is :
Official answer
(2)
$\displaystyle \frac{19}{72}$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.