Question 7
Alex has five coded chests.
There are five numbered keys. Equal digits correspond to equal letters, and different digits correspond to different letters. One key has lost its number. The four remaining numbers are shown below.
Which number belongs on the unlabelled key?
There are five numbered keys. Equal digits correspond to equal letters, and different digits correspond to different letters. One key has lost its number. The four remaining numbers are shown below.
Which number belongs on the unlabelled key?