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Multiple choice questions

I just want to make sure they are correct. If I am wrong please explain why.

Sensitivity analysis information in computer output is based on the assumption of
no coefficient change
one coefficient change
two coefficient change
all coefficients change

I think the correct answer is one coefficient change

Let M be the number of units to make and B be the number of units to buy. If if cost $2 to make a unit and $3 to buy a unit and 4000 units are needed, the objective function is
Max 2M + 3B
Min 4000 (M +B)
Max 8000M + 12000B
Min 2M + 3B

I think the correct answer is Max 2M + 3B

A transportation problem with 3 sources and 4 destination will have 7 terms in the objective function
True
False

I think the correct answer is True

If a real-world problem is correctly formulated, it is not possible to have alternative optimal solutions.
True
False

I think the correct answer is False

Solution Preview

1. Sensitivity analysis information in computer output is based on the assumption of
no coefficient change
one coefficient change
two coefficient change
all coefficients change

I think the correct answer is one coefficient change
You are right.

2. Let M be the number of units to make and B be the number of units to buy. If ...

$2.19