Four pendulums A, B, C and D are suspended from the same

elastic support as shown in figure. A and C are of the same length, while B is smaller than A and D is larger than A. If A is given a transverse displacement,

A is taller than B. C is taller than A. D is taller than E but shorter than B. Who is the tallest?

Among four friends, A, B, C and D, who is the heaviest? B is heavier than A, but lighter than D. C is lighter than B but heavier than A .

A is younger than B, B is elder than C, C is younger than A and D is elder than B. Who is the youngest among A, B, C and D?

Four identical balls A,B, C and D are placed in a line on frictionless horizontal surface. A and D are moed with the same speed u towards the middle as shown. Assuming elastic collisions, find the final velocities.

Five friends A, B, C, D and E are sitting in a row in decreasing order of their weight from left to right. A is heavier than only C, while B is heavier than Both E and A. D is heavier than B. Who amongst the following is sitting exactly in middle between them ?