For problems of this kind firstly obtain the prime factors of each number.
3 = 3
8 = 2 x 2 x 2 = 2³
10 = 2 x 5
The Lowest Common Multiple is the product of the highestpower of each prime factor.
The LCM is thus 3 x 2³ x 5 = 3 x 8 x 5 = 120
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30.
The lowest common multiple (LCM) is: 210
The lowest multiple of 3 and 8 is 3. This is not the lowest common multiple.
the lowest common multiple of 2, 3 and 6 is 6.
The least common multiple (LCM) is: 39