Multiple choice

In the following number series only one number is wrong. Find out the wrong number. 188, 154, 140, 132, 128, 126, 125

  1. 125

  2. 154

  3. 132

  4. 126

  5. 188
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B Correct answer
Explanation

The pattern is: subtract consecutive powers of 2 (32, 16, 8, 4, 2, 1). Checking: 188-32=156 (but we have 154), 154-16=138 (but we have 140), 140-8=132, 132-4=128, 128-2=126, 126-1=125. The first number 154 doesn't fit - it should be 156. This makes 154 the wrong number that breaks the pattern.

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