1. **State the problem:** We have a spinner divided into 5 equal sectors: Red, Blue, Yellow, Blue, Yellow. 2. **Find the probability of landing on red:** Since all sectors are equal in size, the probability of landing on any one sector is \( \frac{1}{5} \). 3. **Formula used:** Probability of an event = \( \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}} \). 4. **Apply the formula:** There is 1 red sector out of 5 total sectors, so the probability is \( \frac{1}{5} \). 5. **Final answer:** The probability that the spinner lands on red is \( \frac{1}{5} \).