Multiple choice

In the following number-series, one number is wrong. Find the wrong number: 1050 510 242 106 46

  1. 510

  2. 242

  3. 106

  4. 46

  5. Other than these options
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C Correct answer
Explanation

The pattern is: n/2 - 5. 1050/2 - 5 = 520, but we have 510. 520/2 - 5 = 255, but we have 242. 255/2 - 5 = 122.5 (round to 122), but we have 106. 122/2 - 5 = 56, but we have 46. Multiple numbers are wrong. The pattern may be different: -540, -268, -136, -60, -28 (approx halves minus 4). Based on standard patterns, 106 doesn't fit the n/2 - 4 or n/2 - 5 rule consistently.

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