(b) Write the numbers \( \frac{1}{3}, \frac{4}{15}, \frac{1}{2}, \frac{1}{5} \) in order from least to greatest. \( \nabla \nabla<\nabla<\square<\square \)

To arrange the fractions \( \frac{1}{3}, \frac{4}{15}, \frac{1}{2}, \frac{1}{5} \) from least to greatest, it helps to convert them to a common denominator or decimal form. 1. \( \frac{1}{3} \approx 0.33 \) 2. \( \frac{4}{15} \approx 0.27 \) 3. \( \frac{1}{2} = 0.5 \) 4. \( \frac{1}{5} = 0.2 \) Now we can see that \( \frac{1}{5} < \frac{4}{15} < \frac{1}{3} < \frac{1}{2} \). So in order from least to greatest, we have: \( \frac{1}{5} < \frac{4}{15} < \frac{1}{3} < \frac{1}{2} \).