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Question: How many students in a class play football? Statements: Only boys play football. There are forty boys and thirty girls in the class.

I alone is sufficient while II alone is not sufficient
II alone is sufficient while I alone is not sufficient
Either I or II is sufficient
Neither I nor II is sufficient
Both I and II are sufficient

Correct Answer: Neither I nor II is sufficient

Explanation:

It is not mentioned whether all the boys or a proportion of them play football.

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