1.

I.Q. of a person is given by I=MC×100, where M is mental age and C is chronological age. If 80≤I≤140 for a group of 12 years old children, then the range of their mental age is

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I.Q. of a person is given by I=MC×100, where M is mental age and C is chronological age. If 80I140 for a group of 12 years old children, then the range of their mental age is



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