Question

Peter is giving marbles to some children at a carnival. He has 5 red marbles, 4 blue marbles, and 3 yellow marbles. If Peter selects a marble randomly without looking, what is the probability that he will give a blue marble to the first child and then a yellow marble to the second child?

4/12 + 3/12 = 7/12
4/12 + 3/11 = 80/132
4/12 * 3/12 = 12/144
4/12 * 3/11 = 12/132

Answer 1

@LilyWinter

Answer 2

it's D

Answer 3

because he would have taken a marble out which gives him 3/11

Answer 4

Wouldn't it be B if its 3/11?

Answer 5

oh wait nvm

Answer 6

oh, ya good catch, i didnt see the * symbol

Answer 7

no, it is B

Answer 8

oh ok lol

Answer 9

You had it right the first time it is D

Answer 10

why multiply instead of divide?

Answer 11

add*

Answer 12

okie cool :p

Answer 13

have you learn about tree diagrams?

Answer 14

that will help explain why we are multiplying and not adding

Answer 15

starting too

Answer 16

ok thanks guys!

Answer 17

np