How many times does 1 appear from 1 to 120?

Answer 1

43

1 to 9 = 1

10 to 19 = 11

20 to 29 = 1

30 to 39 = 1

40 to 49 = 1

50 to 59 = 1

60 to 69 = 1

70 to 79 = 1

80 to 89 = 1

90 to 99 = 1

100 to 109 = 11

110 to 120 = 12