Aman is 16^th from the left end in a row of boys and Vivek is 18^th from the right end. Gagan is 11^th from Aman  towards the right and 3^rd from Vivek towards the right end. How many boys are there in the row ?

In a joint family of seven persons F,E,N,J,P,M and L., there are two married couples. ‘F’ is a house-wife and her husband is ‘E’. ‘J’ is the wife of ‘N’. ‘L’ is the grand-daughter of ‘F’. ‘E’ is the father-in-law of ‘J’ and father of ‘P’. ‘M’ is the son of ‘N’ and brother of ‘L’. How is ‘J’ related to ‘P’.

If ‘A’ and ‘B’ are brothers and ‘C’ is the sister of ‘A’, ‘D’ is the sister of ‘E’ while ‘E’ is the daughter of ‘B’. who is the uncle of ‘D’?

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.

XC13 WD,UF15TG, RS17QT, ?

AA40, CD51, GH64, ? , US100