6. In 1996, a farmer bought two sheep. This year he did not get any offspring. The first sheep gave birth to 1 sheep every three years, and the second sheep gave birth to 1 sheep every two years. All the born sheep gave birth to 1 sheep annually. How many sheep will the farmer have in the year 2000?
6. Let's draw a diagram according to the problem statement.

![](https://cdn.mathpix.com/cropped/2024_05_21_e53d4ff4f2278a1c0d12g-088.jpg?height=448&width=691&top_left_y=1886&top_left_x=682)

Answer: 9 sheep.