Katrina and her friends are going to a concert and have two rows reserved. They put the slips of paper shown into a bag. If a person draws a blue slip, he or she will sit in the front row. A yellow slip means he or she will sit in the second row. Suppose Katrina draws a slip. Not liking the outcome, she puts it back and draws a second time. What is the probability that on each draw her slip is yellow?