<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("p").hide(function(){
$("button").click(function(){
$("p").toggle();
});
});
});
</script>
</head>
<body>
<button>Answer</button>
<p style="background-color:#00ff00">This is a paragraph with little content.</p>
</body>
</html>
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https://www.google.co.in/#q=computer+mcq
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http://www.blogolect.com/2014/08/how-to-add-spoiler-or-hideshow-button-in-blogger.html
http://helplogger.blogspot.in/2012/03/hideshow-widgetsgadgets-in.html
http://www.willmaster.com/blog/javascript/manage-show-hide.php
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("p").hide(function(){
$("button").click(function(){
$("p").toggle();
});
});
});
</script>
</head>
<body>
<button>Answer</button>
<p style="background-color:#00ff00">This is a paragraph with little content.</p>
</body>
</html>
----------------------------------------
https://www.google.co.in/#q=computer+mcq
-----------------------------------------------------------
http://www.blogolect.com/2014/08/how-to-add-spoiler-or-hideshow-button-in-blogger.html
http://helplogger.blogspot.in/2012/03/hideshow-widgetsgadgets-in.html
http://www.willmaster.com/blog/javascript/manage-show-hide.php