G, H, I, J, M, N and O each have their exam on a different day of the same week starting from Monday to Sunday. Only two people have exam before O. Only one person has exam after H. Only three people have exam between O and M. Only one person has exam between G and I. N has exam just before I. How many people will have exam between J and I?

Seven boxes A, C, G, H, J, N, and R are kept one over the other but not necessarily in the same order. Only three boxes are kept above N. Only one box is kept between H and N. Only three boxes are kept between H and A. A is kept at some place above N. R is kept immediately below A. C is kept at one of the places above G. J is not kept immediately above or below H. How many boxes are kept above H?

Seven boxes, G, H, I, J, O, K, and L, are kept one over the other, but not necessarily in the same order. Only I is kept above O. Only G is kept between O and K. Only J is kept below L. How many boxes are kept between H and J?