Answer:
12, 19, 33
Step-by-step explanation:
In order to find the side that can't make up a triangle, you have to add together the two smaller sides. If the two smaller sides are greater than the third side, the set represents a triangle.
8 and 18 is larger than 24, so that set is valid.
6 and 10 is larger than 16, so that set is valid.
11 and 19 is larger than 29, so that set is valid.
12 and 19 is not larger than 33, so that set is invalid and therfore that is your answer.
