Answer:
Probability:
A bag with 30 blue, 15 green, and 45 orange marbles
A bag with 50 red, 30 blue, 10 black, and 10 purple marbles
A bag with 11 green, 13 red, and 12 blue marbles
No probability:
A bag with 3 blue marbles
A bag with 1 blue and 3 yellow marbles
Step-by-step explanation:
1. Count the total amount of marbles
2. Find the ratio of blue marbles to the amount of marbles
3. Simplify
