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Mathematics · 2023 · 2 marks
CBSE 2023 · Region 5 · Set 1 · Q23
Using prime factorisation, find HCF and LCM of 96 and 120.
Using prime factorisation, find HCF and LCM of $\displaystyle 96$ and 120.
Marking-scheme solution
$\displaystyle \begin{array}{l}96=2 \times 2 \times 2 \times 2 \times 2 \times 3
=2^{5} \times 3
120=2 \times 2 \times 2 \times 3 \times 5
=2^{3} \times 3 \times 5
\mathrm{HCF}=24
\mathrm{LCM}=480\end{array}$
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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.