Answer :
The probability of pulling out a blue ball is 1/3
What is probability?
This is a likelihood or chance that an event will occur. Mathematically:
Probability = Expected/Total outcome
If someone randomly reaching into a bag of 8 red table tennis balls and 4 blue table tennis balls, the total outcome is:
Total outcome = 8 + 4 = 12 balls
If a blue ball is pulled out then the probability of pulling it out is:
Pr(blue ball) = 4/12 = 1/3
Hence the probability of pulling out a blue ball is 1/3
Learn more on probability here: https://brainly.com/question/24756209