Dear aspirant,

The 10th class mark sheet and the leaving certificate are the two most important documents that you should have with you. As you said, you don't have a 10th mark sheet and leaving certificate then you must try to find it. If they are lost then you can contact your school and share your problem with them so that they can help you out. But please remember that without having a 10th mark sheet and leaving certificate, you will not be able to study further because these are the basic documents which require everywhere.

I hope, you got your answer.