Question
Find the $H.C.F$ of the following numbers using prime factorization method: $150, 140, 210$
✓
Answer
$504$ and $980$ Prime factorization of $504 = 2 \times 2 \times 2 \times 3 \times 3 \times 7$
Prime factorization of $980 = 2 \times 2 \times 5 \times 7 \times 7$
Therefore, $HCF = 2 \times 2 \times 7 = 28$
Prime factorization of $980 = 2 \times 2 \times 5 \times 7 \times 7$
Therefore, $HCF = 2 \times 2 \times 7 = 28$
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