Multiple choice

Which one of the following is the wrong number in the series $6, 14, 30, 64, 126$?

  1. $126$
  2. $64$
  3. $14$
  4. $6$
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B Correct answer
Explanation

The pattern is x * 2 + 2. 6 * 2 + 2 = 14. 14 * 2 + 2 = 30. 30 * 2 + 2 = 62. 62 * 2 + 2 = 126. The number 64 is incorrect; it should be 62.

AI explanation

The pattern follows a structure of multiplying by 2 and adding 2 to each term. For 6, the calculation is 6 times 2 plus 2, resulting in 14, and for 14, it is 14 times 2 plus 2, resulting in 30. Applying this to 30 gives 62, so 64 is the incorrect term, making the result 64.

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