Question Number 217079 by idos last updated on 28/Feb/25
$$\frac{\mathrm{6}{C}\mathrm{3}×\mathrm{4}{C}\mathrm{1}}{\mathrm{15}{C}\mathrm{4}} \\ $$$$ \\ $$
Answered by MrGaster last updated on 01/Mar/25
$$=\frac{\mathrm{6}×\mathrm{4}}{\mathrm{1365}} \\ $$$$=\frac{\mathrm{24}}{\mathrm{1365}} \\ $$$$=\frac{\mathrm{8}}{\mathrm{455}} \\ $$