#551 - Classic Relation Riddle
Two boys take admission in a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.
"Are you twins," ask the headmaster.
"No," replies the boys.
Is it possible?
Yes, it is certainly possible. They were not twins but triplets.