Directions: Study the following information and answer the questions following:

A certain number of boxes are placed one above another in such a way that box at the bottom is shelf 1 and the box above it is numbered as shelf 2 and so on. There are not more than 14 boxes in the stack. 7 is placed above 8. 10 is placed at exact between of 9 and 11. Only three boxes are kept between 8 and 12, which is kept either at the top or at the bottom of the stack. Only two boxes are kept between 1 and 4, where 4 is kept below 1. Only two boxes are kept between 8 and 5, which is not placed adjacent to 12. 3 is kept between 4 and 2, which is placed immediately below 1. 6 is placed in the exact middle of 5 and 7. Only three boxes are kept between 8 and 4.