Q: icloud password forgot in Ios7

Good day all

I recently bought a Ipad3 from a friend.

When i brought it home it asked to be updated to Ios7 so I updated it.

After the update I wanted to reset it to factory drfaults and asked me for the iCloud password.

My friend does not remember the password and I have tried all possible avenues to retrieve the password but to no avail.

Please help!!!