@Adnan!!!!!! Yesh you can appear in,But i suggest, u should appear in 2011 as well,so that you may have a bit idea for full preparation in coming exams.By the way you have three chances to appear in Css exams,so why not to utilize atleast one for an idea,However you will not be able to apply after 2014 as per 28years policy without any age relaxation.
You can also calculate ur age through this Link:


http://www.css.com.pk/age_calculator...ml?DOB=8141986