To find the probability of randomly choosing a balloon that is either red or has polka dots, we need to first calculate the total number of balloons that fit this criteria.
Total number of red balloons = 13
Total number of balloons with polka dots = 4
Number of red balloons with polka dots = 1
Total number of balloons that are either red or have polka dots = 13 + 4 - 1 = 16
So, the probability of randomly choosing a balloon that is either red or has polka dots is:
Probability = Total number of balloons that fit the criteria / Total number of balloons
Probability = 16 / 52
Probability = 8 / 26
Probability = 4 / 13
Therefore, the probability of randomly choosing a balloon that is either red or has polka dots is 4/13 or approximately 0.3077.
Sarah has 52 balloons; 13 of the balloons are red, and 4 of the balloons have polka dots. Just 1 of the red balloons has polka dots.
What is the probability of randomly choosing a balloon that is either red or has polka dots?
1 answer
1 answer