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 ?
(i). A, B, C, D, E and F are six students in a class. (ii). B and C are shorter than F but heavier than A. (iii). D is heavier than B and taller than C. (iv). E is shorter than D but taller than F. (v). F is heavier than D. (vi). A is shorter than E but taller than F.
Which of the following groups of friends is shorter than A ?
(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 gets most, V should be ranked not lower than :