Question
Find the $H.C.F$ of the following numbers using prime factorization method: $81,117$
✓
Answer
$81$ and $117$
Prime factorization of $81 = 3 \times 3 \times 3 \times 3$
Prime factorization of $117 = 3 \times 3 \times 13$
Therefore, $HCF = 3 \times 3 = 9$
Prime factorization of $81 = 3 \times 3 \times 3 \times 3$
Prime factorization of $117 = 3 \times 3 \times 13$
Therefore, $HCF = 3 \times 3 = 9$
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