How do you find the GCF of 66, 90, and 150?

1 Answer
George C.
Jan 12, 2017

6

Explanation:

Note that the prime factorisation of 66 is:

66 = 2*3*11

Both 90 and 150 are divisible by 2 and by 3, but not by 11.

Hence all three numbers are divisible by 2*3 = 6 and nothing larger.

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