Give stream of consciousness and then the final answer. Mice can multiply very fast. Adult mice can give birth once every month, and baby mice grow into adult mice in just two months after they are born. If you would buy a baby mouse just after it was born, how many mice would you have in 10 months?
Options:
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
One. You cannot have more mice if you start with one!
The final answer: (A).