Construction Planning and Management
The part of a derrick crane include (i) Mast (ii) Boom (iii) Bull wheel (iv) Jack which of these statements are correct?

(i), (iii) and (iv) are correct
(i), (ii) and (iv) are correct
(ii), (iii) and (iv) are correct
(i), (ii) and (iii) are correct

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Construction Planning and Management
If the optimistic time, most likely time and pessimistic time for activity A are 4, 6 and 8 respectively and for activity B are 5, 5.5 and 9 respectively, then

expected time of activity A is greater than the expected time of activity B
expected time of activity B is greater than the expected time of activity A
None of these
expected time of both activities A and B are same

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