UPSC NDA Math Model Paper 8

For a number to be divisible by 5 only if the number end with 0 or 5, here the case is 0, hence the unit digit has to be 0.
Now, remaining are 3 digits 3, 4 and 8
If the number is between (100 and 1000), the ways =32×1=9
If the number is between (1000 and 10000), the ways =33×1=27
If the number is between (10000 and 100000), the ways =34×1=81
∴ Total number of ways = 9 + 27 + 81
Total number = 117