Question

probability
introduction to the probability of an event
a bag with 10 marbles is shown below. (3 marbles are yellow, 2 are blue, and 5 are red.) a marble is chosen from the bag at random. what is the probability that it is not yellow?
write your answer as a fraction or a whole number.

Explanation:

Step1: Find total non - yellow marbles

Total marbles = 10, yellow marbles = 3. So non - yellow marbles = 10 - 3 = 7.

Step2: Calculate probability

Probability of not yellow = $\frac{\text{Number of non - yellow marbles}}{\text{Total number of marbles}}$ = $\frac{7}{10}$.

Answer:

$\frac{7}{10}$