Pediatrics Growth, Development, and Behavior d554db1c Range of IQ in mild mental retardation is? A <50 B 50-70 C 70-100 D >100 High-Yield Explanation b. 50-70(Ref: Nelson's 20/e p 217, Ghai 8/e p 52-54)Mild intellectual disability (ID) is IQ between 50-70, while severe ID is IQ <50