## Task 1 - 330511

Bernd asks his grandfather: "How many years old might this photo be?"

He gets the answer: "Add the largest single-digit number and the largest two-digit number and the largest three-digit number! Then subtract the smallest four-digit number, and you will get the age indication."
The largest single-digit number is 9, the largest two-digit number is 99, the largest three-digit number is 999. Adding these three numbers results in 1107. The smallest four-digit number is 1000. Subtracting it from the previous number results in 107.

The photo is therefore 107 years old.