Respuesta :

3/12, or 1/4 is the probability that it is blue.

What is probability?

  • Probability = the number of ways of achieving success. the total number of possible outcomes.
  • For example, the probability of flipping a coin and it being heads is ½, because there is 1 way of getting a head and the total number of possible outcomes is 2 (a head or tail). We write P(heads) = ½ .

Probability = number of successes / total number of outcomes

Total marbels in bag = 4+ 3 + 5 = 12  

A total of 12 marbles are in the bag.

3 blue marbles are in the bag.

Therefore, the probability of picking a blue is 3/12, or 1/4.

Learn more about probability

brainly.com/question/14740947

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