Question: 1.3 Let Xi = 1 if Project i is selected, i = 1,2,3,4,5; and 0 otherwise: Which answer below indicates that if Project 2 is
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1.3 Let Xi = 1 if Project i is selected, i = 1,2,3,4,5; and 0 otherwise:
Which answer below indicates that if Project 2 is selected, then Project 5 must also be selected?
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X2+X5=1
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x2-x5<=1
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X2+X5<=1
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X2<=X5
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x2>=x5
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X5<=X2
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