For how many minutes from 12:00 noon to one minute before midnight is the sum of the digits on the face of a digital clock greater than 15?
Solution
The answer is 39. The spreadsheet below explains why.
For how many minutes from 12:00 noon to one minute before midnight is the sum of the digits on the face of a digital clock greater than 15?
The answer is 39. The spreadsheet below explains why.