RRB Group-D Model Paper 18 with answers for online practice

Let the third side of the triangle be ‘a’.
Sum of two sides of a triangle is always greater than the third side.
⇒ a < 4 + 10
⇒ a < 14
And also a + 4 > 10
⇒ a > 6
⇒ 6 < a < 14.