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Find the largest number that divides 280 and 490 without leaving a remainder.
Find the largest number that divides 280 and 490 without leaving a remainder.
Solution:
280 = 2 x 2 x 2 x 5 x 7
490 = 2 x 5 x 7 x 7
The largest number that divides 280 and 490 without leaving a remainder is their HCF
HCF of 280 and 490 = 2 x 5 x 7 = 70
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