There are 10 roller coasters at 6 flags, and you only have time to ride 3 before the park closes. How many different ways can yo

Question

ozzi

3 years ago

15

There are 10 roller coasters at 6 flags, and you only have time to ride 3 before the park closes. How many different ways can yo

u create a path to 3 different roller coasters?
A. 120

B. 210

C. 720

D. 151,200

Mathematics

2 answers:

likoan [24] · Answer 1 · 2022-03-14T04:41:36+03:00

likoan [24]3 years ago

7 0

Answer This answer is incorrect. Refer to the video in the modules.

Step-by-step explanation:

Charra [1.4K] · Answer 2 · 2022-03-14T03:34:30+03:00

Answer:

120

Step-by-step explanation:

If order doesn't matter, there are 10 ways to chose the first ride, 9 ways to choose the second, and 8 ways to choose the third. This product (720) has you riding the same 3 coasters in 6 different orders. Dividing by 6 gives ...

720/6 = 120 different combinations of roller coasters

_____

This number might be written as 10C3 (choose 3 from 10). The meaning of that notation is ...

nCk = n!/(k!(n-k)!)

10C3 = 10!/(3!·7!) = 10·9·8/(3·2·1) = 120