vendor has 22 balloons for sale: 11 are yellow, 4 are red, and 7 are green. A balloon is selected at random and sold. If the balloon sold is yellow, what is the probability that the next balloon selected at random is also yellow? (5 points)

Question

fraction 10 over 21

fraction 11 over 21

fraction 10 over 22

fraction 11 over 22

Answer 1

The probability of selecting a yellow balloon on the second attempt given that a yellow balloon was selected on the first attempt is:

(Number of yellow balloons remaining - 1) / (Total number of balloons remaining - 1)

There are 10 yellow balloons remaining and a total of 21 balloons remaining after selling the first yellow balloon.

Therefore, the probability is 10/21, which can be expressed as fraction 10 over 21.