Question

Red, blue, yellow, and green marbles are in a bag, with 14 marbles of each color. One white marble is added to the bag for a total of 57 marbles. What is the probability of choosing the white marble or a yellow marble from the bag?

15/114
15/57
14/57

Answer 1

chance of choosing a white marble is 1/57
chance of choosing a yellow one is 14/57
1/57+14/57= chance of choosing white or yellow
1/57+14/57=15/57
the answer is 15/57

Answer 2

15/57

Explanation:

Given

Total sample space=57 (as one marble was also added to the bag)

Now,

Let P(A) be the probability of drawing a white marble

Let P(B) be the probability of drawing a yellow marble

So,

P(A)=1/57

P(B)=14/57

As we have to calculate the probability of white or yellow marble

P(A or B)=P(A)+P(B)

=1/57+14/57

=(1+14)/57

=15/57

So the probability of drawing a white or yellow marble is 15/57 ..