組合恒等式Cm/n+C(m+1)/n=C(m+1)/(m+1)這一定要記住
C0/3+C1/4+.+C17/20
=C3/3+C3/4+C3/5+.C3/20
=C4/4+C3/4+C3/5+.C3/20
=C4/5+C3/5+.C3/20
...
=C4/21=5985
數(shù)學(xué)組合C0/3+C1/4+C2/5+...+C17/20
數(shù)學(xué)組合C0/3+C1/4+C2/5+...+C17/20
數(shù)學(xué)組合計算題
C0/3+C1/4+C2/5+...+C17/20
數(shù)學(xué)組合計算題
C0/3+C1/4+C2/5+...+C17/20
數(shù)學(xué)人氣：367 ℃時間：2020-10-02 00:39:46
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