Answer:
Permutation without repetition
Step-by-step explanation:
The order of the cards matter, which makes it a permutation, but since none of the cards are exactly the same, repetition isn't allowed/possible
85/100 isnsvsisjdbbsbsjsjdjd
Y =

This is because the total cost is 10x + 480 and then that needs to be divided by the amount of people.
2,2 is 3,4 away from 5,6 and 3²+4²=25=5² so CD=5