Mathematics · 2019
JEE Main · 11 January 2019, Shift 1 · Q87
Two integers are selected at random from the set {1,2, …., 11}. Given that the sum of selected numbers is even, the conditional probability that both…
Two integers are selected at random from the set $\displaystyle \{1,2, \ldots ., 11\}$. Given that the sum of selected numbers is even, the conditional probability that both the numbers are even is :
Official answer
(1)
$\displaystyle \frac{2}{5}$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.