WBCS.LIVE practice question

Find the odd one out: 64, 125, 216, 343, 512, 721

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 343
  2. 512
  3. 721
  4. 216

Correct answer and explanation

Correct answer: 721

Explanation: ✅ Correct Answer: (C) 721 📚 Explanation: Step-1: Analyze the numbers. 64 = 4³, 125 = 5³, 216 = 6³, 343 = 7³, 512 = 8³. Step-2: Check the last number. The next perfect cube after 8³ (512) is 9³, which is 729. Step-3: Since 721 is not a perfect cube, it is the odd one out in this series.