A computer network has 9 servers.
Each server is connected to every other server by exactly one cable.
Work out the total number of cables in the network.
Practise Eduqas GCSE Maths The Product Rule for Counting with exam-style questions for Foundation and Higher tier. 68 questions, matched to the Eduqas GCSE Maths (C300QS) specification and written in Component 1 and Component 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.