Find the next number in the series: 2, 6, 12, 20, 30, ?

  1. 48
  2. 42
  3. 40
  4. 41
Answer

B) 42

Differences are 4, 6, 8, 10 — they change by 2 each time, so the next difference is 12: 30 + 12 = 42.

Quantitative Reasoning MCQ · More Number Series MCQs · Practise