Multiple choice

In each of the following number series a wrong number is given. Find out the wrong number. 26 146 66 115 90 99

  1. 26

  2. 66

  3. 115

  4. 146

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pattern is 26×6-10=146, 146÷2-7=66, 66×2-17=115, 115÷2-32.5=25 (not 90), 25×4-1=99. The pattern breaks at 90. Alternative view: positions alternate between multiplying/dividing by varying factors. 146 doesn't fit the alternating pattern structure.

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