How to use multiple removechild

i tried to remove 3 images with different removeChild. it doesnt work. it will only clear 1 image.

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stop();

aa1.addEventListener(MouseEvent.CLICK, ona1Click);

bb1.addEventListener(MouseEvent.CLICK, onb1Click);

cc1.addEventListener(MouseEvent.CLICK, onc1Click);

next1.addEventListener(MouseEvent.CLICK, onNext1Click);

home1.addEventListener(MouseEvent.CLICK, onHome1Click);

var Q1a:Loader = new Loader();

var Q1b:Loader = new Loader();

var Q1c:Loader = new Loader();

var Q1next:Loader = new Loader();

var Q1home:Loader = new Loader();

//the name of the function has to match what you're calling from the event listener

function ona1Click(evt:MouseEvent):void {

var myQ1a:URLRequest=new URLRequest("wrong.png");

Q1a.load(myQ1a);

addChild(Q1a);

Q1a.x=320;

Q1a.y=180;

}

function onb1Click(evt:MouseEvent):void {

var myQ1b:URLRequest=new URLRequest("tick.png");

Q1b.load(myQ1b);

addChild(Q1b);

Q1b.x=320;

Q1b.y=260;

}

function onc1Click(evt:MouseEvent):void {

var myQ1c:URLRequest=new URLRequest("wrong.png");

Q1c.load(myQ1c);

addChild(Q1c);

Q1c.x=320;

Q1c.y=340;

}

next1.addEventListener(MouseEvent.CLICK, onNext1Click);

//the name of the function has to match what you're calling from the event listener

function onNext1Click(evt:MouseEvent):void {

gotoAndPlay(2);

removeChild(Q1a);

removeChild(Q1b);

  }

home1.addEventListener(MouseEvent.CLICK, onHome1Click);

//the name of the function has to match what you're calling from the event listener

function onHome1Click(evt:MouseEvent):void {

gotoAndPlay(17);

}