We want to select 3 pairs of people from a group of 6.
We use the formula:
n! / (r! * (n -r)!)
where n = 6 and r = 2
combinations = 6! / (2! * 4!) =
combinations = 6 * 5 / 2
combinations = 15
Source:
1728.com/combinat.htm
Answer:
10.21
Step-by-step explanation:
i am sorry but i dont know
B
The opposite of x is -x
And the opposite of -6 is 6
So -x+6 is the inverse