Answer:
[tex]\frac{1}{5}[/tex] or 20%
Step-by-step explanation:
Probability is expressed as a fraction where the numerator is the number of desired outcomes and the denominator is the total number of outcomes. Since there are 10 total marbles and 2 of them are blue, the probability of randomly selecting a blue marble is:
[tex]\frac{blue}{marbles}=\frac{2}{10}=\frac{1}{5}[/tex]
or 20%
