22. If, in a particular cycle, N,O, and S participate in the ceremonies in the first year, which one of the must be true?
a) N participates in the second and third years
b) O participates in the third and forth years
c) N and O both participate in the third year
d) P and T both participate in the fifth year
e) S and T both participate in the fifth year
The polulation of a small country is organized into fice clans--N,O,P,S, and T. Each year exactly three of the five clan members participate in the annual harvest ceremonies. The rules specifying the order of the participation of the clans in the ceremonies are as follows:
Each clan must participate at least once in any two consecutive years.
**No clan participates for three consecutive years***
Participation takes place in cycles, with each cycle ending when each of the five clans has participated three times. Only then does a new cycle begin.
No clan participates more than three times within any cycle
Now... the practice test I have says that the answer is A)... obviously that's wrong.