IQ=49
WHO classification of Mental retardation(MR) mild MR...IQ 50-70 moderate MR ...35-49 severe MR..IQ 20-34 profound MR...IQ under 20 ref; (page no;637) 25th edition of PARK's textbook of Preventive and Social medicine
Mild MR
Moderate MR
Severe MR
Profound MR
Social science, Mental health & Genetics