Suppose we have 5 processes executing in the system. Each one of the five processes

need 4 instances of an I/O device (e.g. each one of the processes needs four printers) in

order to complete.

What is the minimum number of instances of this I/O device do we

need to ensure no deadlock under any scenario? Explain your logic how you reached your

answer.

[PLS NOTE: Its not asking for the maximum number of resources which is

5x4 = 20 I/O devices].