How many times do you write the digit 4 when writing all the numbers from 10 to 100?
90068
Calculating the number of times a digit is written when given two numbers
51299
How many digits is $99^{99}$ without a calculator?
62371
Expected number of times a set of 10 integers (selected from 1-100) is selected before all 100 are seen
542
Why do divisions like 1/98 and 1/998 give us numbers continuously being multiplied by two each time in decimal form?
142389
How to convert words to a number?
95647
How do I repeat a character n times in a string?
11447
How many $4$ digit even numbers have all $4$ digits distinct?
119031
How many 6 digit numbers are possible with no digit appearing more than thrice?
27538
Last Two Digits Problem
108919
Numbers till 400 divisible by 2, 3, 5, 7
127560
Question about repeating decimal?
102349
sum of all the numbers that can be formed using the digits 2,3,3,4,4,4..
65328
Counts and skips the numbers that have digits divisible by 3 (change in base method)
27560
How many zeroes are in 100!
48688
How do I format a number with a variable number of digits in Python?
87956
10-digit numbers with constraints
22454
How many combinations can I make?