find the HCF and LCM of 105,120 and 150 by prime factorisation.

The prime factorisation of 105, 120 and 150 are ;105 = 3×5×7120 = 2×2×2×3×5150 = 2×3×5×5So, LCM = 23 × 3 × 52 × 7 = 4200HCF = 3 × 5 = 15

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