OR_Q.docx - .Which Selectone a.x1x2>=0 b.x1 x2=2 c.x1x2<=0...

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Let  x 1  and  x 2  be 0 - 1 variables whose values indicate whether projects 1 and 2 are not done or are done. Which  answer below indicates that project 2 can be done only if project 1 is done? Select one: a.  x 1  -  x 2  >= 0 b.  x 1  +  x 2  = 2 c.   x 1  -  x 2  <= 0 d.   x 1  +  x 2  = 1 The difference between the transportation and assignment problems is that Select one: a. total supply must equal total demand in the transportation problem b. the number of origins must equal the number of destinations in the transportation problem c.  there are many differences between the transportation and assignment problems d. each supply and demand value is 1 in the assignment problem Assuming  W 1 W 2  and  W 3  are 0 - 1 integer variables, the constraint  W 1  +  W 2  +  W 3  <= 1 is often called a Select one: a.  k  out of  n  alternatives constraint b. corequisite constraint c. multiple-choice constraint d. mutually exclusive constraint Consider a shortest route problem in which a bank courier must travel between branches and the main operations  center. When represented with a network, Select one:
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a. the branches are the nodes and the operations center is the source. b. the branches and the operations center are all nodes and the streets are the arcs. c.  the branches are the network and the operations center is the node. d. the branches are the arcs and the operations center is the node. Consider the following linear programming problem Maximize 4X + 10Y Subject to         3X + 4Y <= 480       4X + 2Y <= 360       X, Y >= 0 The feasible corner points are (48, 84), (0, 120), (0, 0), (90, 0). What is the maximum possible value for the objective function?
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