UPSC Civil Services 2019 Prelims General Studies Paper II

Number of times ‘5’ appear from 1 to 100 = 20
Number of times ‘5’ appear from 101 to 200 = 20
Similary, number of times ‘5’ appear from 201 to 499 = 60
Number of times '5' appear from ‘600 to 1000’ = 80
Number of times ‘5’ appear from ‘500 to 599’. = 120
Total number of times ‘5’ appear from 1 to 1000
= 20 + 20 + 60 + 80 + 120 = 300