30 times because when you count up in tens this is the answer
10 times for the one's digit, 1-100 10 times for the ten's digit, 60-70 = 20 times
48
The number 7 occurs once. The digit 7 occurs 20 times.
2000
999-111=888 888 3 digit numbers can be made with numbers between 1 - 9
It appears 25 times.
19 times.
11 times
11 times
67 times
300 times.
300
As a digit in other numbers it appears 20 times
Including the one in ' 1 ' and the one in '100', there are 21 1s.Every other digit 2 - 9 appears 20 times between 1 and 100 .
10 times for the one's digit, 1-100 10 times for the ten's digit, 60-70 = 20 times
Zero. Only the digits 5 and 0 appear in 500.
Infinitely many.