1. Question: How many sons does D have ? Statements: A's father has three children. B is A's brother and son of D.
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By: guest on 02 Jun 2017 02.08 am
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.