Intelligence quotient can be calculated as
A. $$\frac{{{\text{Actual}}\,{\text{age}}}}{{{\text{Standard}}\,{\text{age}}}}$$
B. Mental × Actual age
C. $$\frac{{{\text{Mental}}\,{\text{age}}}}{{{\text{Actual}}\,{\text{age}}}} \times 100$$
D. $$\frac{{{\text{Actual}}\,{\text{age}}}}{{{\text{Mental}}\,{\text{age}}}} \times 100$$
Answer: Option C

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