For {13, 27, 39}
13 + 27 = 40 (40>39) This can represent a triangle
{14, 23, 37}
14 + 23= 37 This can not represent a triangle
15,19,35
15 + 19 = 34 (34 < 35) This can not represent a triangle
For {9, 14, 25}
9 + 14 = 23 (23 < 25) This can not represent a triangle