2: 30 35 27 12 9 25 8 25
3: 最简分数有 4/9 20/7 23/39 6/15=2/5 7/21=1/3 12/8=3/2 10/15=2/3
4: 略。
5: 1/2 1/4 3/4 2/5
6: 4 4×7 28 ----- = ----------- = ------- 5 5×7 35
5 5×5 25 ------ = ---------- = -------- 7 7×5 35
5 5×3 15 ----- = ---------- = -------- 6 6×3 18
7 7×2 14 ----- = --------- = --------- 9 9×2 18
4 4×4 16 ----- = ------------= ------- 3 3×4 12
13 13×1 13 ------ = ---------- = ------- 12 12×1 12
21 21×2 42 ----- = ----------- = -------- 10 10×2 20
7 7×5 35 ----- = ---------- = ------- 4 4×5 20
7: > > < >
8: 因为2/5>1/3>1/4 零五网编辑提示剩下少卖出就多所以《动物国王》卖出的本书最多 |