The number of sequences in which 7 players can throw a ball, so that the youngest player may not be the last is -.
A.4000
B.2160
C.4320
D.5300
Answer:C
The number of sequences in which 7 players can throw a ball, so that the youngest player may not be the last is -.
A.4000 B.2160 C.4320 D.5300