1: 1/8 9/4 5/17 23/15 31/9
2: 9/100 59/60 13/60 5/24
3: ① 1/3
② 1/3 2/3
4: 1/5 2/5
5: ① 9/24
② 48/85
③ 10/3 3/10
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