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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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Continue Learning about Math & Arithmetic
What is the least common factor of 18and 30?
1 and the highest common factor is 6
What is the most common factor of 42 and 54?
6 is the highest common factor 6*7 = 42 6*9 = 54
How do you write 6 15 in simpler form?
Divide the top (numerator) and bottom (denominator) by their [highest] common factor[s]. hcf(6, 15) = 3 ⇒ 6/15 = (6 ÷ 3)/(15 ÷ 3) = 2/5
What is the highest common factor and 18 and 30?
6
What is the highest common factor of 6 and 27?
It is 3
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