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Factorise into prime numbers and collect the least set of prime numbers: 8 = 2 x 2 x 2 30 = 5 x 3 x 2 Least set is 2 x 2 x 2 x 5 x 3 (miss out the 2 - it appears in both 30 primes and 8 primes) Least common multiple is 2 x 2 x 2 x 5 x 3 = 120

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15y ago

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