HOW MANY TIMES DOES THE DIGIT 8 OCCUR BETWEEN 1 AND 100?
Digit Times 10 numbers end in 8 (8, 18, … 98) 10 more begin with 8 (80, 81, … 89) Total number of 8’s is 20. There are 9 1-digit numbers, and 90 2-digit numbers, for a total of 189 digits used to write all the numbers from 1 to 99. Each non-zero digit appears […]
HOW MANY TIMES DOES THE DIGIT 8 OCCUR BETWEEN 1 AND 100? Read More »