Answer:
5/6
Explanation:
Total marbles in bag:
1 + 2 + 3 = 6
There are 6 total marbles in the bag.
Let's find how many marbles are not blue:
2(yellow) + 3(red) = 5 marbles that are not blue.
Now let's put it all together:
5/6 which represents 5 out of the 6 marbles are not blue.
5/6 is the probability it is not blue.