Five girls A, B, C, Z and U are sitting in a row, facing towards the south (but not necessarily in the same order). No one is sitting to the right of A. Three girls are sitting to the left of U. B is second to the left of C. Who is sitting second to the left of U ?

Z

Answer: Z

In this question you need to first place A because it's position is confirm and fixed, then place U because it's position is also confirmed and given. Then place C and B