15. (3 points) At 7:10 AM, Mom woke up Xiaoming and told him to get up. However, the time Xiaoming saw in the mirror had not yet reached the time to get up, so he told his mom: “It’s still early!” Xiaoming mistakenly thought it was $\qquad$ o'clock $\qquad$ minutes.
【Answer】Solution: At 7:10 AM, the minute hand points to 2, and the hour hand is between 7 and 8. According to the symmetry, it can be seen that the hands point in a way that is axially symmetric to the position at 4:50. Therefore, Xiao Ming mistakenly thought it was 4:50. The answer is: 4,50.