When calculating probability, we are comparing the number of favorable outcomes to the number of possible outcomes. To calculate the probability that a randomly chosen marble is red, we will use the Probability Formula.
P=Favorable Outcomes/Possible Outcomes
We know that one marble is chosen at random from the box.
In the box, there is a total of 7 blue, 6 red, 2 white, and 3 black marbles. The sum of these values is the number of possible outcomes.
7+6+2+3= 18 marbles
Out of these, 6 are red, which is the number of favorable outcomes. Now we have enough information to calculate P(Red marble).
