The problem asks you to look at the number line and write the mixed numbers corresponding to the positions (a) and (b).

1. For part (a), the arrow points to the second marker after 2, meaning it is at 2 and 2/3. This mixed number represents two whole parts and two-thirds of the next interval.

2. For part (b), the arrow is pointing between 4 and 5, more specifically to the marker after 4, which represents 4 and 1/3.

Thus, the mixed numbers are:

• (a) $2 \frac{2}{3}$
• (b) $4 \frac{1}{3}$

Would you like more details on mixed numbers or how to interpret number lines?

Here are some related questions:

1. How do you convert a mixed number into an improper fraction?
2. How can you use number lines to compare fractions?
3. What are the steps to add two mixed numbers?
4. How do you convert improper fractions back into mixed numbers?
5. What are common mistakes to avoid when reading number lines?

Tip: When dealing with number lines, break each interval into equal parts to accurately identify the fractions or mixed numbers represented by arrows.