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| revprev | Admin | Jun 13'24 at 1:02 | −222 | ||
| revcur | Bot | (Created page with "<div class="d-none"><math> \newcommand{\NA}{{\rm NA}} \newcommand{\mat}[1]{{\bf#1}} \newcommand{\exref}[1]{\ref{##1}} \newcommand{\secstoprocess}{\all} \newcommand{\NA}{{\rm NA}} \newcommand{\mathds}{\mathbb}</math></div> Find integers <math>n</math> and <math>r</math> such that the following equation is true: <math display="block"> {13 \choose 5} + 2{13 \choose 6} + {13 \choose 7} = {n \choose r}\ . </math>") | Jun 9'24 at 4:15 | +412 |