The probability of choosing a blue marble is 2/5 or 0.4.
It is given that the jar contains 3 red marbles, 10 blue marbles, 8 green marbles, and 4 yellow marbles.
It is required to find the probability of choosing a blue marble.
It is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
We have:
Number of total marbles = 3+10+8+4 ⇒25
Number of blue marble = 10
From the definition of the probability:
[tex]\rm Probability = \frac{Favourable \ outcomes}{Total \ outcomes}[/tex]
[tex]\rm Probability = \frac{10}{25}[/tex]
[tex]\rm Probability = \frac{2}{5 } \Rightarrow 0.4[/tex]
Thus, the probability of choosing a blue marble is 2/5 or 0.4.
Learn more about the probability here:
brainly.com/question/11234923
