I have a company 100rab int and I am going to make a partnership firm consist of 100rab int and another person. so my question is that am I suppose to get anther gst number for the partnership firm or I can use 100rab int gst no.
You cannot use the GST of a Private Limited Company which has a distinct entity of its own besides its Share Holders and/or Directors. Similarly, a Partnership firm is a different entity where there is the possibility of overlapping of individuals as Partners or Directors.
You may consult your local GST consultant in this regard.