How many sons does Deepak have ?
Statement I. Alisha's father has three children.
Statement II. Basha is Alisha's brother and son of Deepak.
If the data given in both statements I and II together are not sufficient to answer the question
From both I and II together, we can conclude that Alisha and Basha are the children of Deepak, but the sex of third child of Deepak is not known. So, both I and II together are also not sufficient to answer the question.