Question : If the LCM of two numbers 260 and 390 is 780, then find the HCF.
Option 1: 140
Option 2: 133
Option 3: 130
Option 4: 120
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Correct Answer: 130
Solution : Given numbers = 260 and 390 LCM = 780 We know, Multiplication of two numbers = HCF × LCM ⇒ 260 × 390 = 780 × HCF ⇒ HCF = 130 Hence, the correct answer is 130.
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