A student's chronological age is 10 yr a...

A student's chronological age is 10 yr and mental age is 12 yr. His I.Q. will be

100

120

140

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The correct Answer is:

`IQ = ("Mental Age")/ ("Age") xx 100`
`= (12)/(10) xx 100 =120`

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IQ - (Mental age/Chronological age) xx 100 was propounded by

IQ of a person is given by formula: IQ =(MA)/(CA)xx100, where MA is mental age and CA is chronological age.If 80<=IQ<=140 for a group of 12 year children,find the range of their mental age.

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