a) Sets C=N=1:
1111 + 1111 ---- 1110(any non-overflowing addition of two negative numbers has this property)
b) Sets C=Z=1:
1111 + 0001 ---- 0000(add any number to its arithmetic negation for an example of this one)
c) Sets V=N=1:
0111 + 0111 ---- 1110(any overflowing addition of two non-negative numbers will do here)
d) Sets V=Z=1:
1000 + 1000 ---- 0000(I think that this is the only addition which sets both V and Z)
e) Sets N=Z=1:
This is impossible. If the result is negative, it is not zero.