Five boxes each contain at least 1 ball. The mode of the numbers of
balls in each of the boxes is 3. Which of the following statements
must be true?
Ans: The total number of balls in the five boxes is greater than 9.
有点看不懂第二句话， 意思是说五个箱子里的球数之众数为3
这样最少的球数不就是3+1+1+1+1 ＝7
谢谢