Severe mental retardation is: (A) 50 - 69, (B) 35 - 49, (C) 20 - 34, (D) Less than 20
Answer is C. Mental retardation level IQ range Mild 50-69 Moderate 35-49 Severe 20-34 Profound < 20 (Ref: A sho textbook of psychiatry, Niraj Ahuja,7th edition, pg no 156)