# Help with mathematics (numbers and variables)

Hello :D I have a question, I have gotten home as a homework and I looking someone help who саn do my homework because don't quite understand how this works:

Break the following numbers into the product of their prime factors: 252, 882, 4000 and then:

Find the largest common divisor of 18.24 45, 54, 90
and last but not least:

Determine the least common multiple of
24, 56, 168
12, 18, 60
35, 49, 567

I know it's pretty much ... but I can not keep up on this topic: // well, thanks in advance :)

Note by Daisy Rowley
10 months, 1 week ago

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1) $$252 = 2^2 \times 3^2 \times 7$$

$$882 = 2 \times 3^2 \times 7^2$$

$$4000 = 2^5 \times 5^2$$

- 10 months, 1 week ago

2) $$18 = 2 \times 3 \times 3$$

$$24 = 2 \times 2 \times 2 \times 3$$

$$45 = 3 \times 3 \times 5$$

$$54 = 2 \times 3 \times 3 \times 3$$

$$90 = 2 \times 3 \times 3 \times 5$$

Out of all factors 3 is the only common factor. Therefore the highest common factor is 3.

- 10 months, 1 week ago

3) LCM of 24,56,168 is $$168$$

LCM of 12,18,60 is $$180$$

LCM of 35,49,567 is $$10395$$

- 10 months, 1 week ago

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- 6 months ago

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- 1 day, 2 hours ago