Question 10
An has three older brothers: Binh, Dung and Hung. An and Binh are twins. Their four ages add up to 13 years. What is the greatest possible age of Dung?
Practice clarification: ages are positive whole numbers of completed years. Older siblings may have the same completed-year age; no minimum age gap is specified.
Practice clarification: ages are positive whole numbers of completed years. Older siblings may have the same completed-year age; no minimum age gap is specified.