There are 11 students in class 1 of 6 playing table tennis. If two students play a game, how many games will there be in total?
六1班11名同学进行乒乓球比赛，如果两名同学之间都进行一场比赛，一共要比多少场．
<gadget id="calculator">11 - 1</gadget>
<output>10</output>

<gadget id="calculator">11 / 2</gadget>
<output>11/2 = around 5.5</output>

<gadget id="calculator">10 * (11/2)</gadget>
<output>55</output>

<result>55</result>