Seven friends P Q R S T U and V each has a different age P is older than only U and R R is older tha...........

General Intelligence and Reasoning (CHSL) Sitting Arrangement

Seven friends P, Q, R, S, T, U and V, each has a different age. P is older than only U and R. R is older than U. Q is older than S but

younger than T. T is not the oldest among all. The age of how many persons is between the ages of Q and R?