Question

A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marbles.

What is the probability that you choose a blue marble and then another blue marble, assuming you replace the first marble?

A)1/24
B)1/16
C)1/2
D)3/4

D? or C?


Sarah rolls a die twice. What is the probability that she rolls a 3 and then an even number?
A)1/12
B)1/8
C)1/4
D)1/2

D?

Answer 1

12 marbles total
3/12 times 3/12 if you are replacing it.
1/4 times 1/4 = 1/16

There are 6 possible outcomes.

1/6 to roll a three and
3/6 to roll an even number.

For both to happen you have 1/6 times 1/2

Answer 2

Thank so so much

Answer 3

1/6 x 1/2 = 1/2

Answer 4

Typo 1/12

Answer 5

Total 12 marbles
First time blue prob is =3/12 which is 1/4
second time its been replaced so prob will again be 3/12=14
blue and blue
1/4*1/4=1/16
Hope it helps

Answer 6

Thank you Mr.Paul

Answer 7

thanks for the help!