(20) Answer Iam getting is 20..
Since each 4 comp need direct connected with each printer.... so 16 connection + now remaining 4 computer, each connected to 4 different printers, so 4 connections=20 connections.
c1-> p1,p2,p3,p4
c2-> p1,p2,p3,p4
c3-> p1,p2,p3,p4
c4-> p1,p2,p3,p4
c5->p1
c6->p2
c7->p3
c8->p4
Now, any pick of 4 computers will have a direct connection to all the 4 printers.
"remaining 4 computer, each connected to different printers " rt?
Question is quite ambiguous. guess your interpretation is what the question setter had in mind.
refer to this:http://math.stackexchange.com/questions/351948/the-basic-of-the-count
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