Suppose that a decision maker wants to select no more than two of the three projects...

 

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Suppose that a decision maker wants to select no more than two of the three projects from the set (1, 2, 3). Three binary decision variables X1, X2, and X3 are introduced. If Xj=1, project i is selected. This situation can be modeled by introducing a constraint: O a. X1 + X2 + X3 s 2. O b. X1 + X2 + X3 = 2. O c. X1 + X2 + X3 =1. O d. X1 + X2 + X3 s 1. Suppose that a decision maker wants to select no more than two of the three projects from the set (1, 2, 3). Three binary decision variables X1, X2, and X3 are introduced. If Xj=1, project i is selected. This situation can be modeled by introducing a constraint: O a. X1 + X2 + X3 s 2. O b. X1 + X2 + X3 = 2. O c. X1 + X2 + X3 =1. O d. X1 + X2 + X3 s 1.

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