You cannot access Facebook account using Gmail. You have to use it using the Facebook site only. Gmail is just for confirming the account.
no
No, you can't delete Facebook using Gmail. To delete Facebook, you have to go on their website. Gmail just is an interface.
You can't, you need to use your Facebook account to register an account on WikiAnswers.
It costs nothing to open a facebook account.
yes you can login using mobile number in facebook on the main facebook login page.
No, You cannot log on to Facebook from WikiAnswers. You can sign into WikiAnswers using your Facebook account however.
No. At this point in time the only way to join WikiAnswers is by using a Facebook account.
Talk to the site manager and report that the person in question is using an unauthorized Facebook account
There is no way to sign up for WikiAnswers without using Facebook. All users who wish to make a WikiAnswers account must sign up using a Facebook account.
i have two account by using one mobile number
Just join using your Facebook account. If you are not on Facebook, then first join it.