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Let X1 , X2 , and X3 Be 0-1 Variables \ge

Question 15

Multiple Choice

Let x1 , x2 , and x3 be 0-1 variables whose values indicate whether the projects are not done (0) or are done (1) . Which answer below indicates that at least two of the projects must be done?


A) x1 + x2 + x3 \ge 2
B) x1 + x2 + x3 \le 2
C) x1 + x2 + x3 = 2
D) x1 -x2 = 0

Correct Answer:

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