Business Mathematics

51. The slack for an activity is equal to ______________

1. LF-LS.
2. EF-ES.
3. LS-ES.
4. None of the above.

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52. A dummy activity is used in the network diagram when ______________

1. Two parallel activities have the same tail and head events.
2. The chain of acitivities may have a common event yet he independent by themselves.
3. Both a & b
4. None of the above.

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53. Activity –on-arrow (AOA) diagram is prefeered over Activity – on-node (AON) diagram because ______________

1. AOA diagrams are simple to construct.
2. AOA diagrams give a better sense of the flow of time throughout a project.
3. AOA diagrams do not involve dummy activites
4. ALL the above.

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54. Earliest finish time that an activity can be finished without ______________ of precedence requirements.

1. Planning.
2. Violation.
3. Both a&b
4. None of the above

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55. A small circle or rectangle that is known as ______________ serves as a junction point in the project network.

1. Event.
2. Node.
3. Slack.
4. Variables.

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56. Project ______________ phase allocates resources to work packages.

1. Planning.
2. Scheduling.
3. Controlling.
4. Both b & c.

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57. The Objective function of Transportation problem is to ______________.

1. maximize the total cost.
2. minimize or maximize the total cost.
3. minimize the total cost.
4. total cost should be zero.

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58. In Least cost method the allocation is done by selecting ______________.

1. upper left corner.
2. upper right corner.
3. middle cell in the transportation table.
4. cell with the lowest cost.

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59. Purpose of MODI method is to get ______________.

1. degenerate solution.
2. non-degenerate solution.
3. optimal.
4. basic feasible solution.

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60. In transportation problem if total supply > total demand we add ______________.

1. dummy row with cost 0.
2. dummy column with cost 0.
3. dummy row with cost 1.
4. dummy column with cost 1.

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