1. The main differences between a cost estimator and a quantity surveyor is (check all that apply):
   1. They are two names of the same role
   2. The cost estimator has to update his/her info on regular basis. The quantity surveyor does not.
   3. The cost estimator can do approximate and detailed estimates. The quantity surveyor can do only approximate estimates.
   4. The cost estimator deals with cost in $$ while the quantity surveyor deals with quantities of materials.