This Double Summation Concept is GOLD for JEE Advanced | Factorial’s Question of the Day

This Double Summation Concept is GOLD for JEE Advanced | Factorial’s Question of the Day | JEE 2026 | JEE 2027 In this video, we solve a Double Summation Limit problem by reducing it into a single definite integral. This technique of simplifying ΣΣ into a single Σ is incredibly powerful and shows up in many chapters like Probability, Coordinate Geometry (3D), and Series in JEE Advanced. Question: \lim_{n \to \infty} \frac{1}{n} \sum_{i=1}^n \sum_{j=1}^n \frac{1}{\sqrt{n^2 + (i+j)n + ij}} Options: (A) 2(3 + 2\sqrt{2}) (B) 3(2 + 3\sqrt{3}) (C) 2(3 - 2\sqrt{2}) (D) 3(2 - 3\sqrt{3}) 📌 Join our Telegram for notes & discussions: https://t.me/factorialacademy #JEEAdvanced #MathsTrick #DoubleSummation #DefiniteIntegration #LimitProblem #FactorialAcademy