For a given activity, the optimistic time, pessimistic time and the most probable estimates are 5, 17 and 8 days respectively, The expected time is__________________?

A. increase in rates of only important materials
B. variation in cost in materials element, labour element and petrol-oil-lubricant element
C. variation in total cost of the project on an ad hoc basis
D. rate of inflation

A. Drag line
B. Hoe
C. Clam shell
D. Dipper shovel

A. decreasing the direct cost and increasing indirect cost
B. increasing the direct cost and decreasing the indirect cost
C. increasing the direct cost and indirect cost both
D. decreasing the direct cost and indirect cost both

A. 30 kg
B. 300 kg
C. 900 kg
D. 1000 kg

A. Moist loam
B. Good common earth
C. We|l blasted rock
D. Wet sticky clay

A. total duration of project is reduced
B. total duration of project is increased
C. uniform demand of resources is achieved
D. cost of project is controlled