Answer:
[tex]\large\boxed{\dfrac{50}{363}\approx1.4}[/tex]
Step-by-step explanation:
We have
10 + 5 + 15 + 3 = 33 marables
The probability of drawing of green marable is:
[tex]\dfrac{15}{33}=\dfrac{15:3}{33:3}=\dfrac{5}{11}[/tex]
The probability of drawing of blue marable is:
[tex]\dfrac{5}{33}[/tex]
The probability of drawing of green and blue marables is:
[tex]\dfrac{5}{11}\cdot\dfrac{5}{33}+\dfrac{5}{33}\cdot\dfrac{5}{11}=\dfrac{25}{363}+\dfrac{25}{363}=\dfrac{50}{363}\approx0.14[/tex]
