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'6' has the factors, 1,2,3& 6.

'15' has the factors od 1,3,5 & 15.

'3' is the ONLY common and highest factor to both numbers. . Hence '3' is the HCF.

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lenpollock

Lvl 16
6mo ago
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Wiki User

12y ago

The only common factor is 3

* * * * *

Correction: the only non-trivial factor is 3. Remember that 1 is also a common factor.

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Wiki User

15y ago

3

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Q: What is the highest common factor of 6 and 15?
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