In a family, there are four males and three females. Komal is the daughter of…

Blood-relation puzzles are solved by converting each stated relationship — parent, sibling, sister-in-law, maternal uncle — into links on a family tree. A maternal uncle is specifically a mother's brother, and a sister-in-law (with no spouse named for the woman herself) is the wife of one of her siblings. Once every named relationship is placed on the tree, each person's parentage can be read off directly.

1. Raja is married to Prativa and is the father of two children; Komal is named as one of these two children (Raja and Prativa's daughter).

2. Since Raja has exactly two children, the second child is Komal's sibling.

3. Sita is described as Komal's sister-in-law. As no husband is named for Komal, Sita must be married to Komal's sibling — Raja and Prativa's other child.

4. Gopal is named as Kanak's father. If Gopal is that other child, then Sita, as Gopal's wife, is Kanak's mother.

5. Gopal is also described as Rohan's maternal uncle, which means Gopal is the brother of Rohan's mother.

6. Gopal's only sibling is Komal, so Komal must be Rohan's mother.

7. Putting the tree together: Komal is Rohan's mother, and Sita is Kanak's mother.

The stem specifies four males and three females. On this tree, the males are Raja, Gopal, Rohan and Kanak, and the females are Prativa, Komal and Sita — four and three respectively — confirming the family tree is fully and consistently resolved.