Question

If the acceptance of project A is conditional on the acceptance of project B, and vice versa, the appropriate constraint to use is a k out of n alternatives constraint. multiple-choice constraint. mutually exclusive constraint. corequisite constraint.

Answer 1

multiple-choice constraint: A constraint requiring that the sum of two or more 0-1 variables equals 1. Thus, any feasible solution makes a choice of which variable to set equal to 1. Corequisite constraint: A constraint requiring that two 0-1 variables be equal. Thus, they are both either in or out of solution together. x2 = x1 (co requisite) k out of n alternatives constraint: An extension of the multiple-choice constraint. This constraint requires that the sum of n 0-1 variables equals k. mutually exclusive constraint: A constraint requiring that the sum of two or more 0-1 variables be less than or equal to 1. Thus, if one of the variables equals 1, the others must equal 0. However, all variables could equal 0. So the answer is Corequisite constraint.