Multiple choice

Find the wrong term in the following number series- 20 45 94 180 296 465

  1. 45

  2. 180

  3. 296

  4. 465

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

Pattern: 20×2+5=45, 45×2+4=94, 94×2-8=180, 180×2-64=296, 296×2-127=465. The pattern is ×2+5, ×2+4, ×2-8, ×2-64, ×2-127... Position 4 should be 94×2+? Following the pattern +5, +4, the next should be +3: 94×2+3=191, not 180. So 180 is wrong. Option B is correct.

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