Read the directions carefully and answer the following questions. Six persons U, V, W, X, Y, and Z live in a building of six-floors such that the bottommost floor is numbered as 1 and the topmost floor is numbered as 6 but not necessarily in the same order. X lives just above U, who lives on a prime numbered floor. Two persons live between X and
V. Z lives just above
V. W lives neither on a prime numbered floor nor above
X. Who lives on second floor?