Mention the state you stay in first of all then we can guide you in an efficient way. The marks are less to get a GMC especially this year when the cutoffs are expected to rise since you might be knowing that  the number of candidates had increased and also the paper level was called easy comparatively. If you belong to states like Delhi, Rajasthan, Maharashtra, etc. getting a GMC at this marks is impossible but yes you may have some sort of chances if you are from states like Karnataka, Gujarat,etc .

So tell us your state for a proper guidance. 

Thank-you.