Question 21

Find the greatest number that will exactly divide 25, 35, 40 and 30.

Solution

In all above option only 5 will be exactly divide by 25, 35, 40 and 30.

Factor of 25 = 5 $$\times$$ 5

Factor of 35 = 5 $$\times$$ 7

Factor of 40 = 5 $$\times$$ 2 $$\times$$ 2 $$\times$$ 2

Factor of 30 = 5 $$\times$$ 3 $$\times$$ 2

H.C.F. of 25, 35, 40 and 30 = 5

($$\because$$ Common factor 25, 35, 40 and 30 is 5)

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