Eine gute Antwort wäre:

The one mature female rabbit gives birth to one baby female rabbit during the third month. So there is a total of two female rabbits (and several males).

End of the Third Month

The new chart shows this. At the end of month three there is 1 mature female rabbit and 1 baby female rabbit for a total of two female rabbits.

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If you look under month 2 you see how many mature female rabbits there are in month 4. Since it takes rabbits two months to become mature, every rabbit listed for month n will be mature in month N+2.

If you look under month 3 you see how many total female rabbits there are at the start of month 4.


How many rabbits are there at the end of month 4?