Bull's trench kiln is used in the manufacturing of

The compound which is largely responsible for initial setting and early strength gain of Ordinary Portland Cement is

The Optimistic Time (O), most likely Time (M) and Pessimistic Time (P) (in days) of the activities in the critical path are given below in the format O-M-P. The expected completion time (in days) of the project is _______.

If the entries in each column of a square matrix $$M$$ add up to $$1$$, then an eigenvalue of $$M$$ is