Multiple choice

Directions: Find the missing term in the following series. 82, 151, 289, 565, 1117, ?

  1. 1918

  2. 2221

  3. 2316

  4. 2439

  5. 2566
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B Correct answer
Explanation

The pattern is: 82*2 - 13 = 151; 151*2 - 13 = 289; 289*2 - 13 = 565; 565*2 - 13 = 1117; 1117*2 - 13 = 2221.

AI explanation

The pattern is found by multiplying the previous term by two and then subtracting a consecutive odd number. Multiplying 82 by 2 and subtracting 13 gives 151, multiplying 151 by 2 and subtracting 13 gives 289, and multiplying 289 by 2 and subtracting 13 gives 565. Continuing this established logic, multiplying 1117 by 2 and subtracting 13 yields 2221.

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