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hree processes with process IDs P1, P2, P3 with estimated completion time 10, 5, 7 milliseconds respectively enters the ready queue together. A new process P4 with estimated completion time 2ms enters the ‘Ready’ queue after 2ms. Assume all the processes contain only CPU operation and no I/O operations are involved. Use Preemptive scheduling – Preemptive SJF Scheduling/ Shortest Time (SRT).