# P and Q are brothers. R and S are sisters. The son of P is brother of S. Q is related to R as:

- Son
- Brother
- Uncle
- Father

**Answer: (3) Uncle **

**Explanation:-**

P and Q are brothers. R and S are sisters. The son of P is bother of S. The son of P is brother of S.

Then, Q is the uncle of R.

Hence, the correct answer is option (3) Uncle.