1.

Find the greatest number which divided 15, 45 & 60 completely.

Answer»

Factors of 15 = 1, 3, 5, 15

Factors of 45 = 1, 3, 5, 9, 15, 45

Factors of 60 = 1,2,3,4, 5,6,10,12, 15, 20, 30, 60

Common factors of 15, 45,and 60 = 1, 3, 5 and 15

Therefore, 15 is the highest number which can exactly divides 15, 45 and 60.



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