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4.Principles of Inheritance and Variation
normal
$I.Q.$ is the ratio of mental age to
A
Chronological age multiplied by ten
B
Chronological age plus ten
C
Chronological age plus $100$
D
Chronological age multiplied by $100$
Solution
(d)$I.Q.$ may be calculated as –
= $\frac{{{\rm{Mental}}\,{\rm{age}}}}{{{\rm{Chronological age}}}} \times 100$
Standard 12
Biology
