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Mathematics 20 Online
OpenStudy (mathmath333):

question permuttion

OpenStudy (mathmath333):

solve \(\large \color{black}{\begin{align} ^{5}P_{r}=^{6}P_{r-1}\hspace{.33em}\\~\\ \end{align}}\)

hartnn (hartnn):

so where are you stuck?

OpenStudy (mathmath333):

|dw:1439059294486:dw|

hartnn (hartnn):

|dw:1439059398107:dw|

hartnn (hartnn):

|dw:1439059437725:dw|

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