IBPS RRB Officer Prelims 14 Nov 2016 Shift 3 Paper

S is the sister of R.
R is the brother of S.
R is the husband of L.
J is the father of B and Q.
Q is the sister of B.
(3) J is the father of B and Q.
Q is the only daughter of J.
Therefore, B is the son of J.
R is the husband of L.
R is the son of B.
Therefore, B is the father–in–law of L.