The HCF of two numbers is 6 and their LCM is 72. If one number is 24, what is the other?
- A.12
- B.16
- C.18 ✓
- D.20
Explanation: HCF × LCM = product of the two numbers: 6 × 72 = 432. 432 ÷ 24 = 18.
Class 6 IMO Mathematics Olympiad practice · Number Sense · Factors, Multiples & Primes
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