Which electromagnetic rays are used to cook food in

Six persons, A, B, C, D, E and F are sitting around a circle facing outside the centre. What is the position of B with respect to A?

Among six persons F, G, H, I, J, and K, who is second tallest?

I. F is shorter than only two persons and I is taller than only J.

Six persons R, S, T, U, V and W have different heights. Who is the second tallest person?

Six persons A, B, C, D, T and U have different marks in a class test. Who has 2nd highest marks?

How is R related to O?

I. O is wife of E. O and K are the only children of T. I is the only daughter of E. R is the grand-daughter of T.

What is the position of A with respect to B in a round table seating arrangement facing towards the centre?

Out of four students R, N, M, P which student has scored the highest in an examination?

How is B related to C?

I. T is one of the brothers of B. M is the only sister of B.

II. C is sister of N, who is mother of T.

In a row of twelve persons are facing north how many person sits between W and N?