Consider the following statements with respect to the 'Ad Hoc' Judges in the Indian Judiciary:

1. 1.There is no Constitutional provision for the appointment of Ad Hoc judges in the Supreme Court.
2. 2.During discharge of official duties, an Ad Hoc judge enjoys all the jurisdiction and powers as that of a regular judge of the court.
3. 3.The President of India appoints the Ad Hoc judge.

How many of the above given statements are correct?