<prompt> Patient with IQ of 60 hasSevere MRProfound MRModerate MRMild MR  <response>: Mental Retardation Level IQ Range 1. Mild 50-70 2. Moderate 35-50 3. Severe 20-35 4. Profound 20 Reference: A Sho Textbook of Psychiatry by Niraj Ahuja page no.156. 