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lcm(4, 5, 7, 8) = 420

Using the factorisation method - multiply together the highest power of all the primes across the numbers:

4 = 2²

5 = 5

7 = 7

8 = 2³

lcm = 2³ x 5 x 7 = 280

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7y ago

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Q: What is the least common multiple of 4 5 7 and 8?
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