The iPad is on the activation lock screen ? If you can't reset your account's security questions ( If you forgot the answers to your Apple ID security questions)contact Support in the country where you are (and which is therefore the country on your account) and see if they can reset them for you : Contact Apple for help with Apple ID account security
If your country isn't on that page try this form to contact Support : https://www.apple.com/emea/support/itunes/contact.html