Hello Pratibha, 

Well, as per your concern in the marksheet overall percentage are given includes optional subject also. Not top 5 subjects.

So, by filling any form you should write overall percentage of class 10th.

Hope this will help you. All the best. 

Hello Pratibha,

The Registration Guide for CAT Examination states that for computing percentages of marks obtained in SSC/10th/Equivalent examination, the aggregate marks of all subjects that appear in the mark sheet/grade sheet would be considered irrespective of the Boards regulation.

Hence, you should fill details of all the subjects that are present on your mark sheet and not the top 5 subjects.

Good Luck.