Question

Mark the triplet that can be the lengths of the sides of a triangle.

• A. $2,3,5$
• B. $1,4,2$
• C. $7,4,4$
• D. $5,6,12$
• E. $9,20,8$

Answer 1

The correct option is C $7,4,4$

for triplet to be the length of triangle, it must satisfy triangle property.

sum of any two sides must be greater than third side
So, $7,4,4$ is correct answer.
If we consider remaining options, observe that sum of two sides is less than third side, so they cannot form triangle.