My roll numbe 51572
mobile lasat digit 8
sibling 3
x: is a last digit of your roll number
y: is a # of sibilings (0,1…….)
z: is a last digit of your mobile number
Activity
predecessors
Optimistic
Most likely
Pessimistic
A
-
5
6
8
B
3
4
C
2
D
x-1
x +4
x+6
E
1
F
10 -z+x
15-z+x
G
E,F
H
C,D
2+y
I
G, H
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