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180 = 22 x 32 x 5

630 = 2 x 32 x 5 x 7

So the common prime factors are 2, 32 & 5

The hcf of 180 and 630 = 2 x 32 x 5 = 90 (take lowest power of all primes)

The LCM of 180 and 630 = 22 x 32 x 5 x 7 = 1260 (take highest power of all primes)

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Q: What are common prime factors of 180 and 630?
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What are prime factors of 630?

The prime factors of 630 are: 2, 3, 5, 7


What are the prime factors factors of 630?

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What is the greatest common factor of 735 and and 630?

The GCF of 735 and 630 is 105. To find the GCF of two numbers, you first have to split them into their prime factors. In this case, 735 and 630 can be broken down as follows: 735 = 3x5x7x7 630 = 2x3x3x5x7 The next step is to identify any common prime factors. In this case, both numbers have prime factors of one 3, one 5 and one 7. To find the HCF, we multiply these factors together: 3x5x7 = 105 Thus the GCF of 735 and 630 is 105.


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