Seven boxes, P,Q,R,S,T,U,V are kept one above the other containing different number of chocolates ranging from 10-90. not more than four boxes are kept above P. two boxes are kept between P and the box containing 41 chocolates, which is kept below box P. S contains thrice number of chocolates than box Q. Box R contains 50 number of chocolates and is not kept at the top .The number ofchocolates in box V is a cube of a number. Only one box is kept between box containing 41 chocolates and 39 chocolates. box S has less number of chocolates than box P. one of the boxes contain 78 chocolates. five boxes are kept between box containing 64 chocolates and Box R. box V is immediately above box T. box S is not kept immediately above or below box Q. three boxes are kept between box S and box U. box S is above box U. Which among the following boxes is kept immediately below box Q ?