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Multiple choice

Find the missing term of the series: 2, 9, 39, 161, ?, 2613

  1. 651

  2. 551

  3. 441

  4. 781

  5. 951

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The series is 2, 9, 39, 161, ?, 2613. Pattern: 2*4+1=9, 9*4+3=39, 39*4+5=161, 161*4+7=651, 651*4+9=2613. The missing term is 651.

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