Question

A bag has 2 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a red marble, do not replace it, and pick yellow marble?
Answers:
1/8
9/56
1/28
3/28

Answer 1

what is the prob that the first marble is red?

Answer 2

3/8

Answer 3

ok...now that you have a red...what is the prob on the second pick you get a yellow?

Answer 4

3/8?

Answer 5

remember one of the reds is now gone

Answer 6

that also meand there is one fewer marble

Answer 7

*means

Answer 8

2/8

Answer 9

no...think about it and try again

Answer 10

if I take a red...how many marbles do i have left

Answer 11

1/8 then

Answer 12

it is not 1/8

Answer 13

If you take a red it would be 2/8

Answer 14

if you take a red away...and now you seclect a 2nd marble .... what is the prob it is yellow

Answer 15

how many yellow do you have?

Answer 16

3

Answer 17

so 3 should be in this part of the answer

Answer 18

3/28

Answer 19

i think you are now just guessing

Answer 20

your overall answer consists of two numbers that will be multiplied together...the forst number is the 3/8. you need to find the 2nd number

Answer 21

*first

Answer 22

how do you find the second

Answer 23

compute this...

if you take a red away...and now you seclect a 2nd marble .... what is the prob it is yellow

Answer 24

1/3?

Answer 25

the prob = number of yellow/number of marbles

Answer 26

it is not 1/3

Answer 27

3/8 3 yellow marbles 8 all together

Answer 28

but you took one red marble away

Answer 29

2/7

Answer 30

we took a red away not a yellow

Answer 31

3/7 I meant

Answer 32

yeah...the crowd goes wild

Answer 33

multiply 3/8 and 3/7

Answer 34

so its 9/56?

Answer 35

yes

Answer 36

Thanks again! appreciate it

Answer 37

np