Which digit occurred maximum times between the number 1 and 1000?

1

All Digits [0-9] follow the following pattern: There is one occurrence of all digits in every 10 numbers Example. Digit-9 occurred one time between 10 and 19 in 9, between 20 and 29 in 29.

However, for tens(91,92,93...99) and hundreds (900,901.... 999), the occurrence is much more. Since we have included 1000, Therefor 1 is the most occurred digit.

Note: Despite three 0s in 1000, 0 is not most occurred digit as they dont have tens and hundreds like other digits.