<prompt> A 10 year old child has mental age of 4 years. He is:-IdiotImbecileMoronNormal  <response>: IQ level mental age chronological age X 100 - IQ intelligence quotient Mental age Chronological age X 10 Term IQ range Moron 51- 70 Imbecile 26 - 50 Idiot 0 - 25 