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How many sons does D have? Statements:...

How many sons does D have?
Statements:
1. A's father has three children.
2. B is A's brother and son of D

A

I alone is sufficient while II alone is not sufficient

B

ll alone is sufficient while I alone is not sufficient

C

Either I or II is sufficient

D

Neither I nor II is sufficient

Text Solution

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The correct Answer is:
D
From both I and II together, we can conclude that A and B are the children of D, but the sex of A and the third child of D is not known, So, both I and II together are also not sufficient to answer the question.
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