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What is the HCF of 27 and 45?

Updated: 4/28/2022
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Wiki User

12y ago

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To figure this out you should first express the numbers as the product of their prime factors:

27 = 3x3x3

45 = 3x3x5

The next step is to identify any common prime factors. Both numbers have two 3s as prime factors. Multiply these together and you get:

3x3 = 9

Thus 9 is the HCF of 27 and 45.

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Wiki User

12y ago
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Wiki User

12y ago

To find this, you need to split the numbers into their prime factors:

45 = 3x3x5

27 = 3x3x3

The next step is to identify any common prime factors. In this case, both numbers have two 3s as prime factors. Multiply these together and you get 9. Thus the HCF of 45 and 27 is 9.

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Sanjay Sahu

Lvl 2
3y ago

5

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Anonymous

Lvl 1
3y ago

135

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Anonymous

Lvl 1
3y ago

636

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Anonymous

Lvl 1
3y ago

No thing

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How do you get the least common multiple of 27 and 45?

LCM = product/HCF; the HCF of 27 and 45 is 9 so LCM is 27 x 45/9 ie 135.LCM is the smallest multiple of 2 numbers and can be found by factoring both numbers and multiplying the prime factors having the highest powers.Prime factors of 27 are 33Prime factors of 45 are 32 x 5LCM of 27 and 45 is 33x 5 = 135


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