Question : The LCM of the two numbers is 660 and their HCF is 5. If one of the numbers is 55, find the other.
Option 1: 275
Option 2: 12
Option 3: 110
Option 4: 60
Correct Answer: 60
Solution : Given: LCM = 660 HCF = 5 One of the numbers = 55 Let the other number be a. We know that, LCM × HCF = product of two numbers ⇒ 660 × 5 = 55 × a ⇒ a = 60 Hence, the correct answer is 60.
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