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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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You need two numbers for a least common multiple.

The least common multiple of the numbers 8, 10 and 30 is 120.

You need at least two numbers to find an LCM.

The LCM is: 248

The least common multiple of 8 , 3 = 24

24

Q: What is the least common multiple for 30?

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The least common multiple of the numbers 140 and 30 is 420.

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