Question: 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

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].

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