On an intelligence test, a five-year-old child is able to answer the questions that the average seven-year-old can answer. The child's IQ is
A) 125.
B) 140.
C) 110.
D) 120.

Question

Quizplus · Accepted Answer

The child's mental age would be 7 (the age for which they are able to answer questions at the average level) and their chronological age is 5. Their IQ score can be calculated as mental age divided by chronological age, multiplied by 100:
(7/5) x 100 = 140.

On an Intelligence Test, a Five-Year-Old Child Is Able to Answer