Answer:
15
Explanation:
15 is the greatest number that divides 45 60 75 without leaving remainder
Let write the factors of each number:
45: (1,3,5,9,15,45)
60:(1,2,3,4,5,6,10,12,15,20,30,60)
75:(1,3,5,15,15,75).
The greatest common factor is 15. So the answer is 15.
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