Thanks for the question. I understand that your iPad is disabled with an unknown passcode. The following article may help to resolve your issue:
The article includes steps for iTunes, however if you have never synced with iTunes (or do not have access to the computer) follow these steps:
If you don't have access to a computer
If you forgot (or don't know) your passcode, restore the device from backup on the last computer it was synced with when the passcode was turned on... this will remove the passcode. If you do not have access to the last computer it was synced with, you will have to force it into recovery mode & restore as a new device.
See this for more info... http://support.apple.com/kb/HT1212