Question

You randomly draw a marble from a bag of marbles that contains 7 blue marbles, 2 green marbles, and 1 red marble. What is the probability of not drawing a blue marble? If necessary, round your answer to 2 decimal places.

Answer 1

The probability of not drawing a blue marble is 0.30.

Step-by-step explanation:

To find the probability of not drawing a blue marble, we need to find the number of favorable outcomes, which is the number of marbles that are not blue, and divide it by the total number of possible outcomes.

In this case, there are 2 green marbles and 1 red marble, so the number of favorable outcomes is 2+1 = 3. The total number of marbles is 7+2+1 = 10. Therefore, the probability of not drawing a blue marble is 3/10 or 0.3.

To round the answer to 2 decimal places, we round down if the next digit is less than 5, and round up if the next digit is 5 or greater. In this case, the next digit after the second decimal place is 0, so we round down and the answer is 0.30.