sir/madam, i am a student of class 12 and going to appear cbse board examination in 2014.i have already registered for six subjects- physics , chemistry,biology, english, maths and physical education. but now i do not want to appear for maths exam as i am not confident of passing in it. i also don't know whether maths is my sixth subject or not. will my percentage be affected if i do not appear in maths exam or will i be declared pass or fail by the board. please answer my query as i am tensed about it.