Multiple choice

Find the wrong number in the series: 3, 4, 9, 16, 81, 258

  1. 4

  2. 16

  3. 258

  4. 81
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C Correct answer
Explanation

The pattern should be: 2, 3, 8, 63, 3968... where each term is (previous term)² - 1. But 258 breaks this pattern as 81²-1=6560, not 258. This makes 258 the wrong number in the series.

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