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Mining Engineering · Q14

Mine System Engineering

Engineering and GATE · Mining Engineering · question 14

Q14

In a PERT network, the activities on the critical path are a, b and c. The standard deviations of the durations of these activities are 2, 2 and 1 respectively. The variance of the project duration is

A.
3
B.
5
C.
9
Answer
D.
12

Answer: Option C

Solution

Answer: Option C
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