Question

You randomly pull a marble from the bag of marbles. The bag has 3 white marbles, 3 yellow marbles, and 2 black marbles. What is the probability of drawling a yellow marble?

Answer 1

`(3)/(8)`

Explanation:

In order for us to calculate the probability, we will use the following principle. The probability of an event A is given by the number of chances we get to have that event, divided by the total of chances.

IN this case, let A be the event that we get a yellow marble. Note that in total, we have 8 marbles (3 yellow, 3 white and 2 black). So, if we are going to pick a marble at random, we have 8 possibilities for picking any marble. Since we are interested in the yellow ones, we have 3 possibilities of getting a yellow marble. Hence the probability of getting a yellow marble is 3/8.

Answer 2

`P= (x)/(n)`

Where x represent the successes and n the total of marbles and replacing we got:

`P= (3)/(8)= 0.375`

Explanation:

For this case we have the following types of marbles

3 white, 3 yellow, 2 black

The total of marble for this case are:

`n = 3+3+2= 8`

And we have a total of 3 yelow marbles. We can apply the definition of probability given by:

`P= (x)/(n)`

Where x represent the successes and n the total of marbles and replacing we got:

`P= (3)/(8)= 0.375`