Mathematics · 2026
JEE Main · 24 January 2026, Shift 1 · Q9
From a lot containing 10 defective and 90 non-defective bulbs, 8 bulbs are selected one by one with replacement. Then the probability of getting at…
From a lot containing $\displaystyle 10$ defective and $\displaystyle 90$ non-defective bulbs, $\displaystyle 8$ bulbs are selected one by one with replacement. Then the probability of getting at least $\displaystyle 7$ defective bulbs is
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle \frac{73}{10^8}$
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JEE Main 2026 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.