ProofWiki:Sandbox


 * $\le \dfrac{ \left({\displaystyle \prod_{j \mathop = 1}^{k \mathop - 2} \left({n^j - 1}\right) }\right) b} {\left({\displaystyle \prod_{j \mathop = 1}^{k \mathop - 1} n^j }\right) } \le b /n^{k-1}$

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