IQ =20-34 -: (A) Severe MR, (B) Profound MR, (C) Moderate MR, (D) Mild MR
Answer is A. Ans. is 'a' i.e., Severe MR The Intelligence Quotient (I.Q.) is calculated according to the formula:The WHO classification of mental retardation is based on the concept of IQ and includes the following categories:CategoryIQMild50-70Moderate35-49Severe20-34Profound<20A child with IQ <70 is called mentally retarded.