Question : What will be the HCF of the following set of numbers: 30, 45, and 150?
Option 1: 16
Option 2: 15
Option 3: 30
Option 4: 20
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Correct Answer: 15
Solution : 30 = 2 × 3 × 5 45 = 3 × 3 × 5 150 = 2 × 3 × 5 × 5 So, HCF of 30, 45 and 150 = 3 × 5 = 15 Hence, the correct answer is 15.
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