Question
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Three numbers are in the ratio 3 : 4 : 5, and their LCM is 2400. What is their HCF?
Correct Option:
A
Explanation
The numbers are 3x, 4x and 5x. Their LCM is 60x. Since 60x = 2400, x = 40. Because gcd(3, 4, 5) = 1, their HCF is 40.
