import flash.utils.dictionary;
var container:MovieClip;
var dict:Dictionary = new Dictionary();
for(var i:int=0; i<container.numChildren; i++)
{
    var mc = container.getChildAt(i);
    mc.addEventListener(MouseEvent.CLICK, onBtnClick);
    dict[mc] = mc.animation.currentFrame;
}

var correctSolution = 50;
function onBtnClick(event:MouseEvent)
{
    var nr = dictionary[event.currentTarget];
    trace(nr);
    if(nr==correctSolution)
    {
        trace('correct');
    }
    else
    {
        trace('wrong');
    }

}