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Multiple choice

Directions: Find the missing term in the following series. 15, 52, 149, 454, 1355, 4072, ?

  1. 12209

  2. 10454

  3. 9154

  4. 8561

  5. 7948

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

The pattern is: 15*3 + 7 = 52; 52*3 - 7 = 149; 149*3 + 7 = 454; 454*3 - 7 = 1355; 1355*3 + 7 = 4072; 4072*3 - 7 = 12209.

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