Multiple choice

Find the wrong number in the following number series. $120, 140, 150, 180, 20, 340$

  1. $20$
  2. $120$
  3. $340$
  4. $150$
  5. $180$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The series 120, 140, 150, 180, 20, 340 appears to follow: +20, +10, +30, -160, +320. The pattern is inconsistent, and 150 disrupts what could be a doubling pattern (120→140→180→340). The term 150 is likely incorrect as it doesn't fit the underlying structure.

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