Now rats

Level pending

Note: a rat is counted as a pair of rats, definitely a male and a female. The rats (Asian house rats) may not give birth as quickly as the rabbits just now but they give birth to more. But lets make it a bit easier...

  1. After being born, the rats are able to reproduce after three months.

  2. From then on, they reproduce every two months. They give birth to 1 ( in reality, 6, but lets make it easier.) rats every time they reproduce.

  3. They never die.

How many rats do we have at the end of a year?

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