What is the gcf for 90 and 45?

Answer 1

First, find the prime factors:

90 = 2*3*3*5

165 = 3*5*11

Then, multiply the factors (use shared factors only once) to determine the LCM:

LCM = 2*3*3*5*11 = 990

Answer 2

The factors of 90 are:

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

The factors of 162 are:

1, 2, 3, 6, 9, 18, 27, 54, 81, 162

The common factors are:

1, 2, 3, 6, 9, 18

The Greatest Common Factor (GCF) is: 18

Answer 3

Gcf(90, 165) = 15

lcm(90, 165) = 990

Answer 4

Since 45 is a factor of 90, it is automatically the GCF.

Answer 5

LCM is 3150 and GCF is I think, 5

Answer 6

The GCF is 15.

Answer 7

GCF(90, 165) = 15.

Answer 8

GCF(90, 45) = 45.