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Multiple choice

Find out the wrong number in the following number series. 16, 54, 128, 252, 432, 686

  1. 686

  2. 252

  3. 54

  4. 128

  5. 432
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The series follows the pattern n^3 × 2: 2^3 × 2 = 16, 3^3 × 2 = 54, 4^3 × 2 = 128, 5^3 × 2 = 250, 6^3 × 2 = 432, 7^3 × 2 = 686. The term 252 breaks this pattern as it should be 250.

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