This enigmatic inscription has appeared on the wall of my house:

**Could you say what is the missing letter and why?**

#### Solution

They are the initials of the numbers (U) no, (D) os, (T) res, ... therefore the missing letter is the "N" of (N) nine.

This enigmatic inscription has appeared on the wall of my house:

**Could you say what is the missing letter and why?**

They are the initials of the numbers (U) no, (D) os, (T) res, ... therefore the missing letter is the "N" of (N) nine.