Answer:
[tex]\frac{9}{100}[/tex]
Step-by-step explanation:
Since there are 10 marbles, that will be the denominator.
Since the question is telling us what will be the probability of taking a red marble out 2 times, we need to multiply 2 fractions.
So, since there are 3 red marbles this will be the numerator for both fractions.
[tex]\frac{3}{10}[/tex]×[tex]\frac{3}{10}[/tex]=[tex]\frac{9}{100}[/tex]