There are 10 questions in an examination paper. The score of each question behind is 2 points higher than that of the previous one. If the full score of this paper is 100, what is the score of the eighth question?

The sum of the scores of the fifth and sixth questions: 2 × 100 △ 10 = 20 (points); the score of the fifth question is: (20-2) △ 2, = 18 △ 2, = 9 (points); the score of the sixth question is: 20-9 = 11 (points); the score of the eighth question is: 11 + 2 + 2 = 15 (points); a: the score of the eighth question should be 15

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