M1
M2
M3
A1
A2
X
Y
Z
F
G
A
B
D
E
C
3
2
2
3
3
6
4
F
6
10
12
Measure X=6
n
p([A1])=0.942
n
p([A2,M2])=0.0095
•
A1 is unfaulted
•
The double fault is unlikely
