Question

Lidia is packing her suitcase in the dark, so as to not wake her little sister. She blindly chooses 3 of her 6 sweaters. What is the probability that she chooses her 3 favorite sweaters?
(Points : 3)
Option A: 1/216
Option B: 1/120
Option C: 1/20
Option D: 1/18

I chose 1/120 for this one but have a feeling its wrong.

Answer 1

I have a feeling it's D

Answer 2

Hm. Yes it would be D, 1/18. 3 out of 6. 3x6 = 18. So yes answer is D, 1/18. Hope this helps, have a wonderful day. Tag me on any more you need help with. :) P.S your adorable lol xD

Answer 3

There are 3 x 2 x 1 ways of getting her favorite sweater.
There are 6 x 5 x 4 ways of getting any sweater.

(3 x 2 x 1) / ( 6 x 5 x 4 )

Answer 4

D

Answer 5

3*6=18
1/18 makes sense to me

Answer 6

Wait squish the way you solved it is 1/20

Answer 7

There y'go.

Answer 8

So which way is the right way of solving it? 1/18 or 1/20?

Answer 9

It's kinda like the question that was just solved a few minutes ago about the password thing. Same principals, different numbers with more variables.

Answer 10

1/18 :)

Answer 11

And if you REALLY don't believe me, check out this page and look at the second question he asks. Same principals, different variables. ¯\_(ツ)_/¯

https://answers.yahoo.com/question/index?qid=20100327222446AAgJaUZ

Answer 12

What is the probability that in the first pick she picks one of the favorite 3?
3/6 = 1/2
What is the probability that the second pick she picks another one of the favorite 3?
2/5
What is the probability that in the third pick she pick the last of the favorite 3?
1/4
P(favorite 3 out of 6 ) = 1/2 * 2*5 * 1*4 = 2/40 = 1/20

Answer 13

She just wants to know if it's 1/20 or 1/18

Answer 14

I wanna know how to solve it:o Surprising right xD

Okay thank you guys!!

Answer 15

Sure thing.

Answer 16

Thanks @_Squish for correcting me