Question 1
Beaver Alex has 5 chests coded as shown:
To open these chests, Alex has 5 keys marked with numbers. Identical digits correspond to identical letters, and different digits correspond to different letters.
Unfortunately, the number on one of the 5 keys has been erased. The picture above shows the numbers on the other 4 keys. Which of the following is the missing number?
To open these chests, Alex has 5 keys marked with numbers. Identical digits correspond to identical letters, and different digits correspond to different letters.
Unfortunately, the number on one of the 5 keys has been erased. The picture above shows the numbers on the other 4 keys. Which of the following is the missing number?