Find the gratest common factor of 36 and 90

18

Step-by-step explanation:

List your factors first to find the answer

36: 1-36, 2-18, 3-12, 4-9, 6-6

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

Now find in the factors which would be the greatest/largest. The largest factor shared between 36 and 90 is 18.