Riddles Random Riddle: 24 and 20 December 29, 2019September 19, 2019 gags Alone I am 24, With a friend I am 20. When I’m with two friends, we are unclean. What am I? Show answer The letter “X” X = 24th letter of the alphabet XX = Roman numeral 20 XXX = you already know that one, don’t ya?