18 choose 7
=C(18,7)
=18!/(7!(18-7)!)
=31824
OR
18 choices for first passenger,
17 choices for second passenger,
....
12 choices for 7th passenger,
so total = 18*17*16...12
but there are 7! ways to order the 7 passengers, so
number of groups
=18*17*16...12/7!
=31824 as well
There is no question? ...
The letter C stands for the Circumference of the circle
Answer: To confuzing
Step-by-step explanation:
Answer:
6/20, No
4/26, No
2/6, Yes(divide by 4)
1/3, Yes(divide by 8)
Step-by-step explanation:
:)
