Multiple choice general knowledge sports What should come in the place of ? in the following number series. 4,6,12,30,? 60 90 72 45 Reveal answer Fill a bubble to check yourself B Correct answer Explanation The pattern multiplies each number by an increasing factor: 4×1.5=6, 6×2=12, 12×2.5=30. The multiplier increases by 0.5 each time, so the next multiplier is 3. Therefore 30×3=90.