Compare the knowledge of persons X, Y, Z, A, B and C in relation to each other : 1. X knows more than A. 2. Y knows as much as B. 3. Z knows less than C. 4. A knows more than Y. The best knowledgeable person amongst all is :

A. X

(i). Seven students P, Q, R, S,  T, U and V take a series of tests.
(ii). No two students get similar marks.
(iii). V always scores more than P.
(iv). P always scores more than Q.
(v). Each time either R socres the highest and T gets the least, or alternatively S scores the highest and U or Q scores the least. If R is ranked second and Q is ranked fifth, which of the following must be true ?

B. T IS RANKED SIXTH.

There are five friends --- Sachin, Kunal, Mohit, Anuj and Rohan.
Sachin is shorter than Kunal but taller than Rohan.
Mohit is the tallest.
Anuj is a little shorter than Kunal and little taller than Sachin. If they stand in the order of their heights, who will be in the middle ?

D. ANUJ

If (i) P is taller than Q ; (ii) R is shorter tan P; (iii) S is taller than T but shorter than Q, Then who among them is the tallest ?

A. P

A * B means A and B are of the same age;
A - B means B is younger than A;
A + B means A is younger than B; For an expression Farha - Farida - Arif, which of the following cannot be correct under any circumstances ?

A. ARIF IS THE FATHER OF FARHA.