2016 · Q18
All the integers from 1 to 300, how many times is the digit 1 used?
General Mental Ability, Quantitative Aptitude and StatisticsNumber system and arithmetic
- A160
- B140
- C120
- D110
Explanation
Units place: 1 appears in 1, 11, …, 291 — 30 times. Tens place: in 10–19, 110–119, 210–219 — 30 times. Hundreds place: in 100–199 — 100 times. Total = 30 + 30 + 100 = 160. Hence (A).