math problem

For a certain race, 3 teams were allowed to
enter 3 members each.  A team earned 6 –
n points whenever one of its members finished in nth place, where 1 ≤ n ≤ 5.  There were no ties,
disqualifications, or
        withdrawals.  If no team
earned more than 6 points, what is the least possible score a team could have
earned?

A.    0

B.    1

C.    2

D.    3

E.    4

Answer:

第一名 5分（6-1=5）

二     4分

三     3分

四     2分

五     1分

总共1+2+3+4+5=15分。没有个超过6分。极端情况为15-6*2=3