Multiple choice

Find the wrong number in the following number series. 427 452 412 465 401 482

  1. 465

  2. 412

  3. 452

  4. 482

  5. 427
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B Correct answer
Explanation

Looking at differences: 452-427=+25, 452-412=+40, 465-412=+53, 465-401=+64, 482-401=+81. The pattern should be alternating: +25, -40, +53, -64, +81. If 412 were correct (subtracting from 452), next should be 452-53=399, not 465. The wrong number is 412.

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