Answer:
0.35 each
Step-by-step explanation:
We must find UNIQUE combinations because choosing a,b,c,d... is the same as d,c,b,a...etc. For this type of problem you use the "n choose k" formula...
n!/(k!(n-k)!), n=total number of choices available, k=number of choices made..
In this case:
20!/(10!(20-10)!)
20!/(10!*10!)
184756
Answer:
Justin could buy up to 8 cookies.
Step-by-step explanation:
7 * 1.25 = 8.75
15 - 8.75 = 6.25
6.25/.75 = 8.3333333
About one hundreds out of two hundred brobaly like literature better
It isn't because, it isn't consistent, and it doesn't follow any of the other answer choices. :)