Mathematics · 2021
JEE Main · 4 August 2021, Shift 1 · Q77
Four persons work independtly of each other on a task. If the probabilities that they will complete the task are: 1/2, 1/3, 1/4 and 1/5, then the…
Four persons work independtly of each other on a task. If the probabilities that they will complete the task are : $\displaystyle \frac{1}{2}, \frac{1}{3}, \frac{1}{4}$ and $\displaystyle \frac{1}{5}$, then the probability, that at least one of them will complete it, is
Official answer
(2)
$\displaystyle 0.8$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.