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Q: What is the LCM of all the numbers from 1 to 5?

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As lcm(2, 5) = 10, all multiples of 10 are divisible by both 2 & 5.

The LCM of 2 numbers can be one of those numbers when the large of the 2 numbers is 2 times the smaller one of those numbers. For example the LCM of 2 and 4 is 4. For example the LCM of 5 and 10 is 10.

10 is the lcm

Yes. For two prime numbers, the LCM is their product: one times the other. Multiply the two. (e.g. LCM of 5 and 7 is 35) By formula, the LCM for x and y is LCM = x * y / GCF and for primes, the GCF (greatest common factor) is 1.

It is not possible to give a sensible answer to this question. The least common multiple (LCM) refers to a multiple that is COMMON to two or more numbers. You have only one number in the question!

Related questions

1 and 5 have an LCM of 5.

11

1, and only 1. There are no common factors (whole numbers) between those three numbers but one.

5 and 6

5 and 6

1 and 30 5 and 6

The factors of 15 is 3 and 5 i.e we get 15 by multiplying 3 and 5. All the three numbers are prime numbers ( they are divisible by only 1 and themselves). Hence the LCM can be only the product of 3, 5 and 7.

You need at least two numbers to find an LCM.

The LCM of any two prime numbers is their product as for example the LCM of 5 and 7 is 35

If all three numbers are different: 1, 5, 25. Otherwise, additionally one of the sets: {1, 1, 25}, {1, 25, 25}, {5, 5, 25}, {5, 25, 25}, {25, 25, 25}.

The LCM of 5 and 9 is 45. The LCM is the product of all numbers divided by their highest common factor. 5 is prime, and 9 = 3 x 3 x 1, so the GCF is 1. Thus, the LCM is 5 x 9 = 45.45

11 and 5

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