Santosh is the brother of Dinesh. Dinesh is the brother of Paritosh. Paritosh is the Husband of Garima. Haider is the father of Santosh. What is Haider to Garima?
Brother
Mother
Father-in-law
Uncle
Father
Santosh, Dinesh and Paritosh are siblings and Garima is the wife of Paritosh. So, Haider is father-in-law of garima.