木星大学举行过一次考试。这次考试采用选择答案方式,每题下面有一个圈,如认为题中的说法是正确的,就画圈。如不正确就画×。共10题,每题10分,100满分。下图是4张考卷,上面3张已判了分数,最下面一份该判多少分? |
correct answer: OXOXOOXOOX. He got 60 points. |
Another possible answer: XXOXOOOOOX, he also got 60. Since all 4 people gave the same answers for question 1 and 7, we can only conclude that exactly one of 1 and 7 is true. |
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