At the end of the third month, the original female produces a second pair, making 3 pairs in all in the field.

At the end of the second month the female produces a new pair, so now there are 2 pairs of rabbits in the field.At the end of the first month, they mate, but there is still one only 1 pair.How many pairs will there be in one year?

Suppose that our rabbits never die and thatthe female always produces one new pair (one male,one female) every month from the second month on. Rabbits are able to mate at the age of one month so thatat the end of its second month a female can produce another pair ofrabbits. Suppose a newly-born pair of rabbits, one male, one female, areput in a field. Fibonacci's RabbitsThe original problem that Fibonacci investigated (in the year1202) was about how fast rabbits could breed in ideal circumstances. This introduces you to the Fibonacci Numberseries and the simple definition of the whole never-ending series. Rabbits, Cows and Bees Family TreesLet's look first at the Rabbit Puzzle that Fibonacci wrote about and then at twoadaptations of it to make it more realistic. Contents of this page The icon means there is a You do the maths.

Fibonacci sequence in nature definition