The factors of 45 are 1, 3, 5, 9, 15, and 45.
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1, 3, and 9 do.
9 divides both 36 and 45 equally. with no remainders.
Anything that divides into it with no remainder. So 45, 30,18,15,10,9,6,5,3, 2 and 1.
35- 1, 5, 3545- 1, 3, 5, 15, 45the greatest common factor between them is 5* * * * *Why the selective factorisation? 7 divides 35, 9 divides 45?The factors of 45 are 1, 3, 5, 9, 14, and 45.The factors of 35 are 1, 5, 7, and 35.The greatest common factor of 35 and 45 is 5.
The mistake is that there is a greater common factor than 18. It's 36. 36 divides 36 evenly. 36 divides 72 evenly.