Question : The HCF of two numbers 960 and 1020 is:
Option 1: 40
Option 2: 120
Option 3: 60
Option 4: 80
Correct Answer: 60
Solution : Factors of 960 = 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 Factors of 1020 = 2 × 2 × 3 × 5 × 17 $\therefore$ HCF of 960 and 1020 = 2 × 2 × 3 × 5 = 60 Hence, the correct answer is 60.
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Question : The ratio of the two numbers is 4 : 5, and their HCF is 3. What is their LCM?
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Question : If the sum of two numbers is 60 and their HCF and LCM are 5 and 60, respectively, then the sum of the reciprocals of the numbers will be:
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