​Amongst six friends P, Q, R, S, T and U, each has a different height. S is taller than only two other friends. R is shorter than only one friend. P is shorter than S but taller than Q. T is shorter than U. Who is the shortest among all the friends?

S is taller than only two other friends.
_ >_ >_ S > _ > _]
R is shorter than only one friend.
_ > R >_ S > _ > _]
P is shorter than S but taller than Q.
_ > R >_ S > P > Q]
T is shorter than U.
U > R >T S > P > Q]
From the given information, the arrangement will be:
U > R >T S > P > Q
So, Q is the shortest among all the friends.
Thus, Option b is the correct answer.