IBPS RRB Officer Prelims 14 Nov 2016 Shift 2 Paper

A is the son of G and R.
K and M are daughters of Gand R.
S is the sister–in–law of R.
(2) If S has no sister, then G
is brother of S.
G is married to R.
R is the wife of G.
G is the father of K and M.
P is the son of K.
Therefore, G is the grandfather of K.