Multiple choice

In the following number series, a term is wrong. Find the wrong term. 26 27 34 58 106 186 306

  1. 306

  2. 27

  3. 58

  4. 106

  5. 186
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pattern: +1, +2^2=4, +4^2=16, +8^2=64, +16^2=256. Starting from 26: 26+1=27, 27+4=31 (should be 34), 31+16=47 (should be 58). The pattern breaks immediately with 27. If we replace 27 with 28: 28+4=32 (not 34). If we start differently: 27 to 34 is +7, 34 to 58 is +24, 58 to 106 is +48, 106 to 186 is +80. The differences 7, 24, 48, 80 don't follow a clear pattern. Option B (27) is correct as the wrong term.

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