Question

NEED HELP ASAP WILL GIVE MEDAL

Solve. 6c3

-120
-720
-20
-240

Answer 1

is there like a attachment with this?

Answer 2

No :/

Answer 3

>.> that cant be the whole question right?

Answer 4

Thats all it gives

Answer 5

yup, solve 6C3 then those are the options

Answer 6

ohh well sorry i never done a question like this

Answer 7

Oh :( Well thanks for trying.

Answer 8

@DullJackel09 can you help?

Answer 9

Im sorry i do not know this

Answer 10

Ugh I'm gonna fail in life. What grade are you in?

Answer 11

is this combinations? 6 'choose' 3 ??

Answer 12

8th and your not gonna fail

Answer 13

I think so

Answer 14

I wouldn't be so sure..

Answer 15

yeah it's strange that the answers are all negative so I don't think it is actually

Answer 16

Oh no they're all positive i wrote them wrong, stupid me

Answer 17

oh, then yes it is probably a combinations question

have you learned about permutations and combinations yet?

Answer 18

Uh some

Answer 19

I'm not very good at it.

Answer 20

Okay well the C means this a combination. 6C3 means that we have 6 objects and we want to see how may different ways we can choose 3 of them.

Since it is a combination, we don't care what order our choosings are in. (so if we were to choose apple, banana, grapefruit, that means we CANNOT ALSO answer apple, grapefruit, banana because we DON'T care about the order!)

Answer 21

If it was a permutation however, then we would care about the order of the things we choose, and so we would have a lot more answers than if we were using combinations

Answer 22

have you been taught factorials yet?

Answer 23

(the ! symbol)

there is another way to solve this... I just don't want to confuse you

Answer 24

is that when it's like 3! So you do 3*2*1

Answer 25

yes, if you feel comfortable using those then I can give you a formula.

but usually when they teach this stuff they make you draw lines like this _ _ _ and then put in numbers for how many choices you have for each one

Answer 26

Which ever you feel is easier to learn.

We can try the factorials

Answer 27

I think it is better to learn this way, because then you will understand why the factorials work

Answer 28

Ok

Answer 29

So if we have chosen a number (or object or whatever) as our first choice. How many options do we have for our next choice?