Question

A bag contains 5 red cubes and 7 white cubes. Celinda will select one cube, put it in her pocket, and then select a second cube.


Which expression gives the probability that she will select two red cubes?

Answer 1

posting options give me a sec

Answer 2

ok

Answer 3

oh sorry wait lemme just fix it

Answer 4

here is have to go but @gaos can help you

Answer 5

okay well thanks for your help :)

Answer 6

i have to go but he will help you :)

Answer 7

@gaos

Answer 8

@MonKiwi

Answer 9

Hello

Answer 10

hi!

Answer 11

I think It will be b

Answer 12

why do you say that?

Answer 13

First you select one cube the fraction is 5/12
after you select the other the cube you already used one so the fraction is 4/12
5-1=4

Answer 14

then it would be 4/12

Answer 15

yes

Answer 16

but 4/12 is not on there except for b

Answer 17

Why can't it be c though?

Answer 18

Um so you take one out of 12 and it is red also is 5/12 then you pick again and red it is 4 /11

Answer 19

so its c?

Answer 20

i mean d

Answer 21

i thought u knew @Black_ninja123

Answer 22

so I would think D

Answer 23

I'm confused between b and d

Answer 24

:/

Answer 25

@gaos

Answer 26

D would be the correct answer

Answer 27

First you divide
(What you want)/(what you've got)
So
5/12
Then multiply it by
(What you want)/(what you've got) but remember that one ball has gone
4/11
Then multiply both numbers
5/12.4/11

Answer 28

so you start out with 15 cubes but you take one (red and put it in your pocket then you pick again with 14 cubes and take one again (red)

Answer 29

its from what @gaos said