<!doctype html>
<html>
<head>
<script type="text/javascript">
/*<![CDATA [*/
function myFunction() {
var answer = document.getElementById('answer');
if (answer == 10)
document.getElementById("valid").innerHTML = "Correct!";
else
document.getElementById("valid").innerHTML = "Please, Try Again!";
}
/* ]]> */
</script>
</head>
<body>
<h2>What is 3+7=?</h2>
<form>
<input type="text" id="answer">
<input type="submit" onClick="myFunction(); return false;">
</form>
<div id="valid"></div>
</body>
</html>
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