A child of 16 years age scores 75 in I.Q. test. His mental age will be __________ years.

Correct option is D

The correct answer is 12 years. The formula for calculating mental age (MA) from an I.Q. score is:

Information Booster:
1. I.Q. Formula:
2. Average I.Q. is 100 (Mental Age = Chronological Age).
3. I.Q. below 70 may indicate intellectual disability.
4. Mental Age reflects cognitive abilities compared to age norms.
5. Standardized I.Q. tests help assess learning needs.