Question

What is the value of 12C5 ?



A.
95,040







B.
792







C.
120







D.
60

Answer 1

I got B. I plugged the values into the formula: \[C(n,r)=\frac{ n! }{(n-r)!r! }\]

Answer 2

so that would be:\[C(12,5)=\frac{ 12! }{ 5!7! }\]

Answer 3

ohhhh.... ok thanks i might have a couple more questions

Answer 4

What is the value of (8 – 3)!?

A.
5

B.
120

C.
40,314

D.
336
My answer is a
am i right?

Answer 5

hold on i'll figure it out...

Answer 6

It's B because (8-3)! means the factorial of 5. To figure it out you'd multiply 5*4*3*2*1.

Answer 7

okay thanks, umm could you answer one more

Answer 8

yeah

Answer 9

Troy can order a large or small snow cone. There are 15 flavors and 2 toppings from which to choose.

How many ways can Troy order a snow cone?

A.
30

B.
60

C.
32

D.
120
I'm thinking b

Answer 10

Yeah, I think that's it because 2 flavors*2 sizes*15 flavors=60 options

Answer 11

okay thanks

Answer 12

you're welcome. any more questions before I go?

Answer 13

lol i was hoping you would ask, actually i do have 1 or 2 idk

Answer 14

cool

Answer 15

What is the value of 7P3?

A.
35

B.
210

C.
56

D.
840

Answer 16

So for this one we'd use the formula:\[P(n,r)=\frac{ n! }{ (n-r)!}\]
So we'd plug the values in and get 210.

Answer 17

okayyyyyy I just need you to check this one

A book club has 10 members.

How many ways can they choose a president, vice president, and secretary from among the members?

A.
30

B.
120

C.
720

D.
100
i pick c

Answer 18

Yeah, I think that's it because they'd have 10 choices for president, then 9 choices for vice president, then 8 choices for secretary, so if you'd multiply those you would get 720.

Answer 19

ok now i have a question that has nothing to do with learning

Answer 20

okay

Answer 21

are you a girl or boy?

Answer 22

I'm a girl.

Answer 23

oh okay, I mastered my quiz so thanks! :)

Answer 24

you're welcome!