Question

How many times does the digit of 9 appears in a numbers from 1 to 100. What fraction of numbers upto 100 has number 9 present in them

Answer 1

part 1:

9,19,29,39,49,59,69,79,89,91,92,93,94,95,96,97,98,99,90.
20 times.

Answer 2

HERE IS YOUR ANSWER
9.19.29.39.49.59.69
79.89.90.91.92.93.94.95.96.97.98.99
the fraction is19/100