a$.$ Draw the AOA chart, make FP and BP then attach it$.(5m)$

b$.$ Fill the template

$(7m)$

c$.$ What is the probability of finishing the project in $31$ days? $(3m)$

$\backslash$table$[[,],[$Act$.,$Predecessor,$a,m,b,],[$A$,,,,,],[$B$,$dots,$7,10,13,],[$C$,$dots,$7,11,15,],[$D$,$A$,$ B$,13,14,17,],[$E$,$B$,7,9,15,],[$F$,$C$,6,8,10,],[$G$,$E$,7,8,16,],[$H$,$F$,12,15,18,]]$