Hi,
How do the two figures are side by side ?

\setupTABLE[row][1,2][width=1.5cm,align={middle,lohi}]
\setupTABLE[c][1][width=3cm,align={middle,lohi}]
\starttext
\startcombination[2*1]
{%
\bTABLE[align={middle,lohi}]
\bTR\bTD{}\eTD\bTD{$A$}\eTD\bTD{$\overline{A}$}\eTD\bTD{Total}\eTD\eTR
\bTR\bTD{$B$}\eTD\bTD{}\eTD\bTD{}\eTD\bTD{}\eTD\eTR
\bTR\bTD{$\overline{B}$}\eTD\bTD{}\eTD\bTD{}\eTD\bTD{}\eTD\eTR
\bTR\bTD{Total}\eTD\bTD{}\eTD\bTD{}\eTD\bTD{1}\eTD\eTR
\eTABLE
}
{%
{\externalfigure[denombrement.pdf]}
}
\stopcombination
\stoptext