var a=Math.ceil(10*Math.random()),b=Math.ceil(10*Math.random()),o=Math.ceil(10*Math.random())%3,c='+',r=0,x='';
if(o==0){r=a+b;}else if(o==1){c='-'; if(b>a){var t=b;b=a;a=t;};r=a-b;}else{c='*';r=a*b;}
x=a+'&nbsp;'+c+'&nbsp;'+b;
