Q: What pair of numbers has a least common multiple of 30?

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1 and 7

1 and 7

Since 70 is a multiple of 14, it is the least common multiple. Or, you can determine it as you would any pair of numbers. The least common multiple of two numbers is the product of the two numbers divided by their greatest common factor. The greatest common factor of 14 and 70 is 14. Therefore, the least common multiple 14 x 70 ÷ 14 = 70.

12 and 24, among others.

It would be a multiple. The word "LEAST" (in Least Common Multiple) is a superlative adjective and that means there can be only one. The result would be a least common multiple only if every pair of the numbers were coprime.

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12,36

No.

10 and 35

2 and 13

How about: 3 and 4

14

They are 7 and 5

1 and 7

The LCM is: 30

1 and 7

14 and 35