Our one mature female rabbit gives birth to one baby female rabbit during the third month.
| Month | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| Female Rabbits | 1 | 1 | 2 | |||||||
The chart shows the situation. The baby rabbit is labeled with her month of birth. There is now 1 mature female rabbit and 1 baby female rabbit (born in month 3) for a total of two female rabbits.
The new-born rabbit will be immature during month three. But the mature rabbit will give birth to another baby during month four.
How many female rabbits will there be during month 4?