- A4
- B5
- C6
- D7
Step-by-Step Solution
Left side counts are 2, 3, 4, ... So the 4th line has 5 numbers on the left (16+17+18+19+20 = 21+22+23+24).
Answer: B) 5
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Patterns in Whole Numbers practice questions