2 + 3 + 4 = 9 |
Two twins are 2 people, three triplets are 3 people, and four quadruplets are 4 people.
The Barber of Seville
Riddle:
The barber of Seville shaves all men living in Seville.
No man living in Seville is allowed to shave himself.
The barber lives in Seville.
Who then shaves the barber of Seville?