Twenty Minus Nine Plus One
This page is the CodyCross answer for the clue below from Medieval Times, Group 231, Puzzle 5 (Tower of London).
Question is: Twenty Minus Nine Plus One
and the answer is: TWELVE
Word Meaning:
TWELVE — The cardinal number occurring after eleven and before thirteen, represented in Arabic numerals as 12 and in Roman numerals as XII.
Definitions from Wiktionary.