a bag contains 12 red 3 blue 6 green and 4 yellow marbles if a marble is drawn from the bag at random, what is the probability that the marble will be either blue or yellow

7/25

Step-by-step explanation:

Probability = # of favorable outcomes / # of possible outcomes

Favorable outcomes = # of blue and yellow marbles

There are 3 yellow marbles and 4 blue marbles

There are 7 blue and yellow marbles so the favorable outcome is 7

Possible outcomes = total number of marbles

12 + 3 + 6 + 4 = 25

There are a total of 25 marbles

So possible outcomes = 25

If probability= favorable outcomes / possible outcomes then the probability of pulling a blue or yellow marble is 7/25