Previous in Probability and Statistics Next in Probability and Statistics
Question Number 124282 by bramlexs22 last updated on 02/Dec/20
Answered by liberty last updated on 02/Dec/20
Commented by malwan last updated on 02/Dec/20
$$\frac{\begin{pmatrix}{\mathrm{5}}\\{\mathrm{5}}\end{pmatrix}}{\begin{pmatrix}{\mathrm{25}}\\{\mathrm{5}}\end{pmatrix}}\:=\:\frac{\mathrm{1}}{\frac{\mathrm{25}×\mathrm{24}×\mathrm{23}×\mathrm{22}×\mathrm{21}}{\mathrm{5}×\mathrm{4}×\mathrm{3}×\mathrm{2}×\mathrm{1}}}\: \\ $$$$=\:\frac{\mathrm{1}}{\mathrm{5}×\mathrm{23}×\mathrm{22}×\mathrm{21}}\:=\:\frac{\mathrm{1}}{\mathrm{53130}} \\ $$