12th Class
Mathematics
Sample Paper
Maths Olympiad Model Test Paper-10
question_answer
In \[\Delta ABC\], the mid-points of the sides AB, BC and CA are respectively (I, 0, 0), (0, m, 0) and (0, 0, n). Then, \[\frac{A{{B}^{2}}+B{{C}^{2}}+C{{A}^{2}}}{{{I}^{2}}+{{m}^{2}}+{{n}^{2}}}\] is equal to ______.