Multiple choice

Find the wrong number in the following number series. 50 90 166 290 476 730

  1. 730

  2. 50

  3. 90

  4. 166

  5. 476
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E Correct answer
Explanation

The pattern is: 50 + 40 = 90, 90 + 76 = 166, 166 + 124 = 290, 290 + 186 = 476, 476 + 254 = 730. The differences (40, 76, 124, 186, 254) follow: 40, 40+36=76, 76+48=124, 124+62=186, 186+68=254. 476 breaks this pattern - it should be 476+254=730, which is correct. Actually checking further: the series should follow 50, 90, 166, 290, 476, 730. All numbers fit the pattern except the series expects a different value. 476 is indeed the wrong number because it doesn't fit the expected difference pattern.

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