I am going to tell you,how you can hack the victim Facebook account by his friend list.For this trick it is necessary you have already 3 fake facebook account.
First work,add 3 fake facebook account with victim facebook's friend list by sending friend request to victim,all person know how to add with a person in facebook.
When your all fake id add with victim then go to sign in page of the facebook,here you see a option 'Forget the Password?' click in,you see a window open like given below...
Enter the victim account id address and click in search option.You see a new window like given below...
In above picture you see a option 'No longer have access to these?' click it,then a new window open in which Facebook ask new email address ,here you enter a wrong email address and continue like given below...
After above work it also ask some security question but you given the wrong answer 3 times,you see a new window open like given below...
Click continue and select 3 friend from the list,this 3 friend who are ? you know very well.
Facebook send the security code to all select friend list ID,means it come to you,in step 3 enter the code and recover the account.
This post writes only for viewer knowledge,don't use it for any hacking activities,in place of hacking increase your account security and add some unknown friend in your friend list.
Also given your good comment.