其它
In a zoo, there are three monkeys. The monkeys are all younger than $$5$$ years old. None of them has the same age, and all their ages are whole numbers. The product of their ages is $$8$$. What is the sum of their ages? 
Overseas Competition->Knowledge Point->Word Problem Modules
The whole numbers smaller than $$5$$ are: $$1, 2, 3, 4$$ (age cannot be $$0$$)  The product of three numbers is $$8$$.  $$1\times2\times4=8$$  Their sum: $$1+2+4=7$$ 