Sruthi is 6 years old but she can solve problems which 9 years old children can solve. Therefore her mental age is 

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TNUSRB SI 2010 Official Paper (Held on 04 July 2010)
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  1. 15 years
  2. years
  3. years
  4. years

Answer (Detailed Solution Below)

Option 2 : 9 years
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If Sruthi is 6 years old but can solve problems which 9 years old children can solve, then her mental age is 9.

Mental age is a measure of a person's cognitive development, and it is typically measured by standardized tests. The average mental age for a 6-year-old is 6, and the average mental age for a 9-year-old is 9.

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