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The Least Common Multiple (LCM) of 6, 7, and 21 is the smallest multiple that is divisible by all three numbers. To find the LCM, you need to factorize each number into its prime factors: 6 = 2 x 3, 7 = 7, and 21 = 3 x 7. Then, you take the highest power of each prime factor that appears in any of the factorizations: 2 x 3 x 7 = 42. Therefore, the LCM of 6, 7, and 21 is 42.
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Continue Learning about Other Math
What is the LCM of 7 21 and 5?
The LCM is 105.
What is the LCM of 7 21 35?
The LCM of 7 21 35 is 105
What is the LCM of 6 and 15 and 21?
The LCM is 210.
What is the LCM of 21 and 35 and 42?
Note that 21 x 2 = 42, so we really only need to look at 35 and 42. So 7 x 5 = 35, and 7 x 6 = 42. There is a common factor of 7. So we have 7 x 5 x 6 = 210 is the LCM.
What is the LCM of 6 7 and 14?
LCM of 6, 7, and 14 = 42
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