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Q: What number between 30 and 50 is a multiple of both 3 and 7?
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What is the least number that is both a multiple of 30 and a multiple of 40?

120


What multiple is 6 and 15 both in?

30 is the smallest number that is a multiple of both 6 and 15


What number is a multiple of both 3 and 10?

It is: 30


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Which number is divisible by both 2 3 5?

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What is the least common factor of 30 and 42?

The least common factor of 30 and 42 is the smallest number that is a factor of both of them and is 1.However, I suspect that you mean either:What is the highest common factor of 30 and 42?ie what is the highest number that is a factor of both 30 and 42: hcf = 6;What is the lowest common multiple of 30 and 42?ie that is the smallest number that is a multiple of both 30 and 42 lcm = 210.


What is your number your number is a multiple of 5 and is less than 50 your number is between a pair of twin primes your number has exactly 8 factors?

It's a multiple of 5, a multiple of 6 (since it's between twin primes), and less than 50. The only possibility is 30. To check: The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30