\( I Q \) of a person is given by the formula : \( I Q=\frac{M A}{C A} \times 100 \) where \( M ...

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\( I Q \) of a person is given by the formula : \( I Q=\frac{M A}{C A} \times 100 \) where \( M A \) is mental age and \( C A \) is chromological age. If \( 80 \leq I Q \leq 140 \) for a group of 12 year children find the range of their mental age.
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