Answer:
7, 18, 11
13, 5, 7
Step-by-step explanation:
Following set of numbers don't represent the lengths of sides of triangle:
7, 18, 11
13, 5, 7
To be the side lengths of a triangle, sum of the lengths of any two sides must always be greater than the third side.
Here, in 7, 18, 11
7 + 11 = 18 which is not greater than 18.
Similarly in 13, 5, 7
5 + 7 = 12 which is less than 13.
