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Look at 2, 9, 28, 65, ?, 217. What number goes in place of the question mark?

Competition practiceNumber Series
  • A126
  • B124
  • C125
  • D129

Step-by-Step Solution

Each term is : 1+1, 8+1, 27+1, 64+1, so the 5th is 125 + 1 = 126 (and 216 + 1 = 217).
Answer: A) 126

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