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Three processes, P1, P2 and P3 arrive at the same time on a system with a time quantum of 2 seconds. P1 runs for 2 seconds, then P2 runs for 2 seconds, then P3 runs for 2 seconds. The processes then take turns running for 2 seconds each until the document ends.

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three processes arrive on the same time
three processes arrive on the same time Time quantum = 2
three processes arrive on the same time (Time quantum = 2) let P1 works for 2 sec
three processes arrive on the same time (Time quantum = 2) let P1 works for 2 sec
three processes arrive on the same time (Time quantum = 2) Then stop the work of P1
three processes arrive on the same time (Time quantum = 2) go to P2 AND let it works for 2 sec
three processes arrive on the same time (Time quantum = 2) Stop P2 then go to P3 & let it works for 2 sec
three processes arrive on the same time (Time quantum = 2) Return back to P1 & let it work for 2 sec
three processes arrive on the same time (Time quantum = 2) Stop P1 .. Go to P2
three processes arrive on the same time (Time quantum = 2) Stop P2 .. Go to P3
three processes arrive on the same time (Time quantum = 2) Return back to P1
three processes arrive on the same time (Time quantum = 2) Stop P1 .. Go to P3

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