# Question: Consider the following problem Maximize Subject to x1 3 6 12 x2

Consider the following problem:

Maximize

Subject to

x1 ∈ {3, 6, 12}, x2 ∈ {3, 6}, x3 ∈ {3, 6, 9, 12},

x4 ∈ {6, 12}, x5 ∈ {9, 12, 15, 18},

all these variables must have different values,

x1 + x3 + x4 + 25.

Maximize

Subject to

x1 ∈ {3, 6, 12}, x2 ∈ {3, 6}, x3 ∈ {3, 6, 9, 12},

x4 ∈ {6, 12}, x5 ∈ {9, 12, 15, 18},

all these variables must have different values,

x1 + x3 + x4 + 25.

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