[ahmad209]

hello there i want expalanaitions for that questions por favor, El Señor...
i want 2 ask here if i have any problem in iq question /.......can i introduce it in this section gree subject test :mathematics or is there other section to write the questions that any one can help me.................
those are questions i hope any one can help me


1- 4 books are arranged on a book shelf . the positions of the books are numbered 1 throgh 4 ,from the left to right . for the following pair of conditions , how many possiblr orderings are there ? c sits to the right of b . b sits next to d only if b sits next c ?(4-6-8-10-12) answer:4<<<how is that


2- A cupboard has five shelves numbered 1 through 5 , from bottom on top ...each shelf has 2 compartements. there are 8 items A,B,C,D,E,F,G,H in the cupboard , no two of which are in the same compartement .items D and Eare on the same shelf . B is on the shelf directly below G . if a shelf contain only one item , it cannot be directly above or directly below another shelf that contains only one item . C is the only item on one of the shelves . there is only one item on the fourth shelf . which one of the following is a complete and accurate list of the items any one of which could be on the top shelf ?
( D- D,E,G,C - D,E,G,B - D,E,G,C,F -D,E,G,H,F,A ) answer: D,E,G,H,F,A<<<<<how is that