Question

a jar of an unknown amount of red, blue, and yellow marbles sits before you. marbles are put back into the jar before the next random pull. what is the probability of pulling a yellow marble?

Explanation:

Step1: Count the number of marbles

Count the total number of marbles in the jar. Assume there are \(n\) marbles in total.

Step2: Count the number of yellow marbles

Count the number of yellow marbles. Assume there are \(m\) yellow marbles.

Step3: Calculate the probability

The probability \(P\) of pulling a yellow marble is given by the formula \(P=\frac{m}{n}\times100\%\).
Assume there are 20 marbles in total (\(n = 20\)) and 9 yellow marbles (\(m=9\)). Then \(P=\frac{9}{20}\times100\% = 45\%\)

Answer:

45%