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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 6 · Set 2 · Q16
A box contains 90 discs, numbered from 1 to 90. If one disc is drawn at random from the box, the probability that it bears a prime number less than…
A box contains $\displaystyle 90$ discs, numbered from $\displaystyle 1$ to 90. If one disc is drawn at random from the box, the probability that it bears a prime number less than $\displaystyle 23$ is
Official answer
(C)
$\displaystyle \frac{4}{45}$
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CBSE Class 10 Mathematics past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.