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The common multiples of 18 and 45 are the multiples of their lowest common multiple (which is 90), namely:

90, 180, 270, 360, 450, 540, 630, 720, 810, 900, 990, 1080, 1170, 1260, 1350, 1440, 1530, 1620, 1710, 1800, 1890, 1980, 2070, 2160, 2250, 2340, 2430, 2520, 2610, 2700, 2790, 2880, 2970, 3060, 3150, 3240, 3330, 3420, 3510, 3600, 3690, 3780, 3870, 3960, 4050, 4140, 4230, 4320, 4410, 4500, 4590, 4680, 4770, 4860, 4950, 5040, 5130, 5220, 5310, 5400, 5490, 5580, 5670, 5760, 5850, 5940, 6030, 6120, 6210, 6300, 6390, 6480, 6570, 6660, 6750, 6840, 6930, 7020, 7110, 7200, 7290, 7380, 7470, 7560, 7650, 7740, 7830, 7920, 8010, 8100, 8190, 8280, 8370, 8460, 8550, 8640, 8730, 8820, 8910, 9000, ...

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8y ago
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Anonymous

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3y ago
thanks for answering
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8y ago

2 x 3 x 3 = 18

3 x 3 x 5 = 45

3 x 3 x 7 = 63

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7y ago

They are all multiples of 1, 3 and 9.

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Q: What are the common multiples of 18 and 45?
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Related questions

What are the first 5 common multiples of 9?

The first 5 multiples of 9 are 9, 18, 27, 36, and 45. For them to be common, they need to be compared to another set of multiples.


What are the first 3 common multiples of 2 and 9?

18, 36, 54


What is the common multiple of 15 30 and 45?

There are infinite common multiples for a set of numbers. So it is not possible to write down all the common multiples. Some common multiples of 15, 30 and 45 are 90, 180, 270, 360,... There is another way to find common multiples: Write the multiples of LCM(15, 30, 45). Actually the common multiples of a set of numbers are the multiples of their LCM. LCM of 15, 30 and 45 is 90. And the multiples of 90 are 90, 180, 270, 360, 450, 540,... which are the common multiples of 15, 30 and 45.


Are 45 and 18 multiples of 9?

Yes, 9x2=18 and 9x5=45


What are common multiples of 3 and 9?

Because 9 is a multiple of 3, the common multiples of 3 and 9 are the multiples of 9. The first 10 common multiples of 3 and 9 are 9, 18, 27, 36, 45, 54, 63, 72, 81, and 90.


What are the common multiples of 18 and 24?

The common multiples of 18 and 24 are 72 and 144.


What are the common multiples of 22 24 and 45?

The common multiples of 22, 24, and 45 are 3960, 7920, 11880, and so on.


What are 45 63 18 multiples?

630 and all the multiples of 630.


What is 45 63 18 are multiples of?

They're all multiples of 9.


What are two common multiples for 18 and 36?

All multiples of 36 are multiples of 18.


What is the common multiples of 15?

Multiples of 15 include 15, 30 and 45. For them to be common, they need to be compared to another set of multiples.


Is 45 and 18 multiples of 9?

Yes