Mathematics
NULL
Medium
Question
In how many sequences can 7 players throw a ball so that the youngest is not last?
A
4000
B
2160
C
4320
✓ Official correct answer
D
5300
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
4000
No member explanations yet for this option.
B
2160
No member explanations yet for this option.
C
4320
No member explanations yet for this option.
D
5300
No member explanations yet for this option.
Explanation
Total 7!; youngest last in 6!. Allowed = 7! − 6! = 5040 − 720 = 4320.