10. In a math competition, there are 5 questions, each with a different natural number score. The smaller the question number, the fewer points the question is worth (for example, the score of question 1 is less than the score of question 2). Xiao Ming answered all the questions correctly, and his total score for the first 2 questions is 10 points, and the total score for the last 2 questions is 18 points. Therefore, Xiao Ming's total score is ( ) points.
【Analysis】According to the requirements of the question, the fourth question must score at least two points higher than the second question. If the first question is 1 point and the second question is 9 points, then the fourth question must be at least 11 points, which does not satisfy the requirement that the fifth question scores more than the fourth question; if the first question is 2 points and the second question is 8 points, then the fourth question must be at least 10 points, which does not satisfy the requirement that the fifth question scores more than the fourth question; if the first question is 3 points and the second question is 7 points, then the fourth question must be at least 9 points, which does not satisfy the requirement that the fifth question scores more than the fourth question; if the first question is 4 points and the second question is 6 points, then the fourth and fifth questions are 8 points and 10 points respectively, which meets the requirements, at this time the third question is 7 points. Therefore, the total score of these five questions is $10+7+18=35$ points.