In how many ways can you sit 8 people on a bench if 3 of them must sit together?
a) 720
b) 2,160
c) 2,400
d) 4,320
e) 40,320
a) 720
b) 2,160
c) 2,400
d) 4,320
e) 40,320
try doing it this way:
consider these 3 as one, thus you have to make 6 guys sit on a bench (6! ways)
now these three can be made to sit in different arrangements (3! ways)
total number of ways = multiple of both (6! X 3! ways)
