Please help me thanks!

Answer:
[tex] \frac{6}{17} [/tex]
Step-by-step explanation:
Given,
No. of blue marbles = 6
No. of green marbles = 6
No. of red marbles = 5
So,
Total no. of marbles = 6+6+5 = 17
Therefore,
Probability of not getting blue marbles
[tex] = \frac{6}{17} [/tex]
Hence,
3rd option is correct.