The least number of computers required to connect 10 computers to 5 routers to guarantee 5 computers can directly access 5 routers is ______
A. 74
B. 104
C. 30
D. 67
Answer:C
The least number of computers required to connect 10 computers to 5 routers to guarantee 5 computers can directly access 5 routers is ______
A. 74
 B. 104
 C. 30
 D. 67

Explanation: Since each 5 computer need directly connected with each router. So 25 connections + now remaining 5 computer, each connected to 5 different routers, so 5 connections = 30 connections. Hence,
