HCF & LCM · Question 12 · Hard

The HCF and LCM of two numbers are 11 and 7700 respectively. If one number is 275, what is the other?

  1. 252
  2. 350
  3. 324
  4. 308
Answer and explanation

Answer: D. 308

Explanation: Other number = (HCF × LCM) ÷ 275 = (11 × 7700) ÷ 275 = 308. Check: 275 = 11 × 25 and 308 = 11 × 28 with 25 and 28 co-prime.

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