answersLogoWhite

0


Best Answer

Expressing each number as the product of prime numbers can help in taking out common factor.

Prime factorization of 90 = 2x3x3x5 = 21x32x51

Prime factorization of 216 = 2x2x2x3x3x3 = 23x33

It is clear that 2x3x3 or 21x32 is common in P.F. of both numbers.

So, the highest common factor is 2x3x3 = 18.

User Avatar

Wiki User

13y ago

Still curious? Ask our experts.

Chat with our AI personalities

LaoLao
The path is yours to walk; I am only here to hold up a mirror.
Chat with Lao
JordanJordan
Looking for a career mentor? I've seen my fair share of shake-ups.
Chat with Jordan
JudyJudy
Simplicity is my specialty.
Chat with Judy
More answers
User Avatar

Wiki User

7y ago

90 = 2 x 3 x 3x 5 while 216 = 2 x 2 x 2 x 3 x 3 x 3

The factors common to both numbers are 2 x 3 x 3 = 18

So the HCF is 18

User Avatar

Add your answer:

Earn +20 pts
Q: What is the highest common factor of 90 and 216?
Write your answer...
Submit
Still have questions?
magnify glass
imp