Sita, Ramanand and Suresh are the children of Mr. and Mrs. Malhotra, Rani, Raja and Satya are the children of Mr. and Mrs. Aggarwals. Girija and Rahul are the children of Mr. and Mrs. Gupta. Suresh and Girija married to each other and Rajni, Sushil and Ramayan are their children. Sita and Satya are also married to each other and Prem and Amar are their children. How is Suresh related to Rahul.