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Which of the following will NOT be a number of the series 1, 8, 27, 64, 125, …?

Question and options

Which of the following will NOT be a number of the series 1, 8, 27, 64, 125, …?
  1. 253
  2. 512
  3. 729
  4. 1,000

Answer and explanation

Correct answer: A - 253
The series consists of perfect cubes 1, 8, 27, 64, ... 512=83512 = 8^3, 729=93729 = 9^3, 1000=1031000 = 10^3 are cubes, but 253 is not a cube, so 253 is not a term.

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