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Four new machines M1, M2, M3 and M4 are ...

Four new machines `M_1, M_2, M_3` and `M_4` are to be installed in machine shop. There are five vacant places A, B, C, D and E available. Because of limited space, machine `M_2` cannot be placed at C and `M_3` cannot be placed at A. The cost of matrix given below:

Find the optimal assignment schedule.

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