If \( \mathrm{L}=\sum_{\mathrm{r}=7}^{2400} \log _{7}\left(\frac{\m...

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If \( \mathrm{L}=\sum_{\mathrm{r}=7}^{2400} \log _{7}\left(\frac{\mathrm{r}+1}{\mathrm{r}}\right), \mathrm{M}=\prod_{\mathrm{r}=2}^{1023} \log _{\mathrm{r}}(\mathrm{r}+1) \) and \( \mathrm{N}=\sum_{\mathrm{r}=2}^{2011}\left(\frac{1}{\log _{\mathrm{r}} \mathrm{p}}\right) \)
\( \mathrm{P} \)
W where \( \mathrm{p}=(1 \cdot 2 \cdot 3 \cdot 4 \cdot 5 \cdot \ldots \ldots \ldots \ldots \cdot 2011) \), then
(A) \( \mathrm{L}+\mathrm{M}=13 \)
(B) \( \mathrm{M}^{2}+\mathrm{N}^{2}=101 \)
(C) \( \mathrm{L}-\mathrm{M}+\mathrm{N}=6 \)
(D) \( \mathrm{LMN}=30 \)
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