छह डिब्बे B1, B2, B3, B4, B5 और B6 एक के ऊपर एक रखे गए हैं लेकिन जरूरी नहीं कि इसी क्रम में हों। B4 ऊपर से दूसरे स्थान पर रखा गया है। B1 के नीचे केवल दो डिब्बे रखे गए हैं। B2 के नीचे केवल B5 रखा गया है। B6 को B3 के ऊपर रखा गया है। B6 के नीचे कितने डिब्बे रखे गए हैं?

Seven boxes, A, B, E, F, L, M and P, are kept one over the other but not necessarily in the same order. Only three boxes are kept below L. Only two boxes are kept between L and F. Only A is kept above B. M is kept at some place below P and at some place above E. Which box is kept at the second position from the bott om?

Six boxes, A, B, C, P, U and V, are kept one over the other, but not necessarily in the same order. B is the top-most box, and C is immediately below B. There are only two boxes between B and V. There are only three boxes between P and C. There is only one box below U. Which box is kept immediately below U?