Question
Using prime factorization, find the $HCF$ and $LCM$ of:
$8, 9, 25$

Answer

$8 = 2 \times 2 \times 2 = 2^3 9 = 3 \times 3 = 3^2 25 = 5 \times 5 = 5^2$
$HCF (8, 9, 25) = 1$
$LCM (8, 9, 25) = 2^3 \times 3^2 \times 5^2 = 1800$

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