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Ans. 1. The big M method solves the problem in one pass, whereas the two phase

method solve it in two stages.

2. The big M method is computionally inconvenient due to existence of the large number M The two phase method does not involve M during

computation

3. The big M method present a difficulty when the problem is solved on digital computer, but there is no such type of problem in two phase method.

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Q: Difference between big M method and two phase method?
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