Question : What is the product of the two numbers whose HCF is 7 and LCM is 280?
Option 1: 1980
Option 2: 980
Option 3: 3920
Option 4: 1960
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Correct Answer: 1960
Solution : The product of two numbers is equal to the product of their highest common factor (HCF) and least common multiple (LCM). So, if the HCF is 7 and the LCM is 280. The product of the two numbers = 7 × 280 = 1960 Hence, the correct answer is 1960.
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