Multiple choice

In the following wrong number series, a term is wrong. Find the wrong term. 498 499 491 464 400 275

  1. 499

  2. 491

  3. 464

  4. 498

  5. 400
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D Correct answer
Explanation

The series follows the pattern: subtract consecutive cubes. 498-1³=497 (not 499), 499-2³=491, 491-3³=464, 464-4³=400, 400-5³=275. The pattern should be subtracting 1³, 2³, 3³, 4³, 5³. Since 498 is the starting point, the wrong term is 498 - the pattern should start from 498-1³=497, making the first term 497, not 498.

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