4!=4*5*6*7.
5!=5*6*7*8*9.
4!/5!=1/18.
若2!=2×3!=3×4×5,=6×7×8×9×10×11,請計算4!/5!的值
若2!=2×3!=3×4×5,=6×7×8×9×10×11,請計算4!/5!的值
數(shù)學人氣:314 ℃時間:2020-04-11 18:44:41
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