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the houses in a colony are numbered from 1 to 100, how many times does the digit 2 occurs in house numbers
From 1- 10, 2 occurs 1 time
From 11- 20, 2 occurs 2 time
From 21- 30, 2 occurs 10 time
From 31- 40, 2 occurs 1 time
From 41- 50, 2 occurs 1 time
From 51- 60, 2 occurs 1 time
From 61- 70, 2 occurs 1 time
From 71- 80, 2 occurs 1 time
From 81- 90, 2 occurs 1 time
From 91- 100, 2 occurs 1 time

So the total times 2 occurs from 1 to 100 is 20 times.


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