The GCF of both numbers is 1
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2 goes into both numbers 4 and 90 because 2 x 2 = 4 and 2 x 45 = 90.
Any of its factors
It is: 11 and 1/4
18 can be divided by 3 18 can be divided by 9 45 can be divided by 9 45 can be divided by 3
1 goes in 45 times. 3 goes in 15 times. 5 goes in 9 times. 9 goes in 5 times. The rest don't go in.