Math Function.

This shows how a simple math problem can be used in javascript and show the user the answer.

<script type="text/javascript">
var number1=prompt ("Think of a number between 1-9. Now times that by 9");
function Mathassignment4() {
if (number1 >=1 && number1 <=9)
{
alert( "You answer is " + number1*9 );
}
else if (age >10)
{
alert("wrong number");
}
}
</script>