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Question
Find the HCF of the following number.
150, 225
Solution
Factors of 150: 1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150
Factors of 225: 1, 3, 5, 9, 15, 25, 45, 75, 225
Common factors of 150 and 225: 1, 3, 5, 15, 25, 75
∴ HCF of 150 and 225 = 75
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