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Mathematics · 2024 · 1 mark
CBSE 2024 · Region 5 · Set 2 · Q12
If the prime factorisation of 2520 is 2^3 × 3^a × b × 7, then the value of a +2 b is:
If the prime factorisation of $\displaystyle 2520$ is $\displaystyle 2^{3} \times 3^{\mathrm{a}} \times \mathrm{b} \times 7$, then the value of $\displaystyle \mathrm{a}+2 \mathrm{~b}$ is :
Official answer
(A)
$\displaystyle 12$
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CBSE Class 10 Mathematics past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.