In a project there are 9 activities: which are se

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ESE 2018 Prelims Paper I
Engineering aptitude
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Engineering aptitude

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In a project there are 9 activities: which are sequential; which are sequential; which are sequential. Also run parallel to and run parallel to besides these activity dependencies, it is also needful that be completed before taking up G; A and H be completed before taking up D and K. How many dummies are to be drawn on the activity network?

[ESE 2018 Prelims Paper I]

A 5

B 4

C 3

D 2