The formula of combination is

We have

and


Hence, there are 1001 ways of arranging 10 records from 14 records
Answer:
It would be 54.
Step-by-step explanation:
It would be 2 times 2, which is four, and then you would add by 50.
2 x 2 = 4
4 + 50 = 54
So, it will not be 100, it will be 54.
It's 48/200=0.24$ per a bead
She will have to pay 0.24*25=6$
The three remaining slices would form 108 degrees.
Hope this helped (and that I was right) =P