Question

A bag contains 4 white, 3 blue, and 5 red marbles.

Find the probability of choosing a blue marble, then a red marble if the red marbles are not replaced.

5/44
15/35
2/3
1/15

Answer 1

What is P(choosing a blue marble first) ?

Answer 2

3 out of 12??

Answer 3

Correct.
Now you are not replacing that marble.
So you are left with 11 marbles in the bag => 2 blue,4 white, 5 red.
Now, what is P(now drawing a red marble) ?

Answer 4

ehhh 5 out of 11? ..

Answer 5

I think I took this assesment last week

Answer 6

really? what school you in?

Answer 7

Right again.
Since both events are taking place simultaneously, you need to multiply the probabilities. That'll yield you the ans.

Answer 8

connectiions academy or connexus

Answer 9

I have to multiply what, the fractions I got? 3 out of 12 and 5 out of 11?

Answer 10

Im in cca too @THEGAMER607

Answer 11

ok

Answer 12

Yes, when two events occur simultaneously, you multiply the respective probabilities of individual events so as to get the net probability of the total event.

Answer 13

are you rushing just to finish all of your lessons? @BellaNina865 if you are then im rushing too

Answer 14

soooo I can multiply the bottom numbers of the fractions too right?

Answer 15

Yes,

Answer 16

@THEGAMER607 I only got 9 or 8 days left and I still need to finish a lot of work so yeah, if I have time I would do extra credit too

Answer 17

@shubhamsrg I got 15/132

Answer 18

Correct.
You might wanna simplify the fraction a little bit though.

Answer 19

RIGHT :D

Answer 20

I got 5/44 :3 !!!

Answer 21

so these are exclusive events ,,

Answer 22

5/44 seems correct ^_^