What’s the probability of drawing a blue marble from a bag?

Question

There are 5 red, 3 blue, and 2 green marbles in a bag. I’m trying to figure out the probability of pulling a blue one on the first try.

Answer 1

Pr(blue) = 3/(5+3+2) = 3/10 = .3 = 30% chance of randomly picking blue

Answer 2

Hello, thank you for posting your question!

In order to solve this one you want to find the total number of marbles in the bag and then how many of them are blue

Total = Red + Blue + Green

Total = 5 + 3 + 2

Total = 10

Since 3 of those are Blue that means that the probability here will be 3/10 = 0.30

I hope that helps! Feel free to reach out if you have any more questions beyond that :)

Answer 3

Total marbles= 5 red + 3 blue + 2 green

Blue marbles = 3

Probability of find blue marble = blue marbles / total marbles

= 3/10

Answer: 3/10

Answer 4

Start by finding the total number of marbles:

5 red + 3 blue + 2 green = 10 marbles.

The number of blue marbles is 3.

So:

P(blue) = 3 out of 10 = 3/10 or 30%