解不等式 Cn4大于Cn6 求n (此处C是指组合里的那个) /4!*(n-4)!>n!/6!*(n-6)!所以6!*(n-6)!>4!*(n-4)!5*6>(n-4)(n-5)n²-9n-10
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![解不等式 Cn4大于Cn6 求n (此处C是指组合里的那个) /4!*(n-4)!>n!/6!*(n-6)!所以6!*(n-6)!>4!*(n-4)!5*6>(n-4)(n-5)n²-9n-10](/uploads/image/z/12439132-52-2.jpg?t=%E8%A7%A3%E4%B8%8D%E7%AD%89%E5%BC%8F+Cn4%E5%A4%A7%E4%BA%8ECn6+%E6%B1%82n+%EF%BC%88%E6%AD%A4%E5%A4%84C%E6%98%AF%E6%8C%87%E7%BB%84%E5%90%88%E9%87%8C%E7%9A%84%E9%82%A3%E4%B8%AA%EF%BC%89+%2F4%21%2A%28n-4%29%21%3En%21%2F6%21%2A%28n-6%29%21%E6%89%80%E4%BB%A56%21%2A%28n-6%29%21%3E4%21%2A%28n-4%29%215%2A6%3E%28n-4%29%28n-5%29n%26%23178%3B-9n-10)
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