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Question 17 of 26
Q.

Develop a network based on the following information.

ActivityABCDEFGH
Immediate predecessor--ABC, DC, DEF
Puducherry TnboardTamil Nadu HSC First Year (DGE) Commerce Board 2023Subjective· 2mImportance★★★★★
65% · 17/26 Questions
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Using the precedence list, A and B emanate from the start node; C and D converge to a common node (since E and F each need both C and D); E, F branch out and are followed by G, H respectively.

Step 1 — Read the precedence table.

ActivityImmediate predecessor
A–
B–
CA
DB
EC, D
FC, D
GE
HF

Step 2 — Place starting activities. A and B have no predecessors, so both start from node 1: A =1→2= 1\to 2, B =1→3= 1\to 3.

Step 3 — Place C and D and merge them. C follows A (2→42\to 4) and D follows B (3→43\to 4). Because both E and F require both C and D, C and D must end at the same event (node 4).

Step 4 — Branch E and F, then G and H. From node 4: E =4→5= 4\to 5 and F =4→6= 4\to 6. G follows E (5→75\to 7) and H follows F (6→86\to 8).

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