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    • Question

      Select the number from among the given options that can

      replace the question mark (?) in the following series. 240, 242, 245, 250, 257, 268, ?
      A 276 Correct Answer Incorrect Answer
      B 281 Correct Answer Incorrect Answer
      C 274 Correct Answer Incorrect Answer
      D 282 Correct Answer Incorrect Answer

      Solution

      The differences between consecutive terms are consecutive prime numbers starting from 2. 240 + 2 = 242 242 + 3 = 245 245 + 5 = 250 250 + 7 = 257 257 + 11 = 268 268 + 13 = 281

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