Total score = 88*3 = 264.
Range = Maximum score - Minimum score.
(1) Sum of the last 2 exams = 85*2 = 170. So, the score in her first exam = 264-170 = 94. We may assume that this is the maximum score but we still don't know the minimum score.
(2) Sum of the first 2 exams = 84*2 = 168. Again, this doesn't tell us the whole story.
(1) + (2): Score in the first exam = 94, score in the last exam = 264-168 = 96, score in the second exam = 264-(94+96) = 74. So, the range = 96-94. So, both statements
...
Range = Maximum score - Minimum score.
(1) Sum of the last 2 exams = 85*2 = 170. So, the score in her first exam = 264-170 = 94. We may assume that this is the maximum score but we still don't know the minimum score.
(2) Sum of the first 2 exams = 84*2 = 168. Again, this doesn't tell us the whole story.
(1) + (2): Score in the first exam = 94, score in the last exam = 264-168 = 96, score in the second exam = 264-(94+96) = 74. So, the range = 96-94. So, both statements
...
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