Common Error Detection
Find out whether there is any grammatical error in below sentence.What does Professor Dhavan / spend so many hours / in the laboratory?

in the laboratory?
spend so many hours
What does Professor Dhavan
No error

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Common Error Detection
Find out whether there is any grammatical error in below sentence.The presumption that the average investor does not understand / or take interest in the affairs of the company / is not correct.

No error
is not correct
The presumption that the average investor does not understand
or take interest in the affairs of the company

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