Question

The HCF of 24, 60 and 90 is:

• A. 3
• B. 6
• C. 12
• D. 4

Answer 1

Answer:

B. 6

factors of 24 $=2\times{2}\times{2}\times{3}$

factors of 60 $=2\times{2}\times{3}\times{5}$

factors of 90 $=2\times{3}\times{3}\times{5}$

∴ HCF $=2\times{3}=6$