10 Important mathematical operation for competitive test
Trick for Multiplying by 11 ⚡
✅ Quickly multiply any two-digit number by 11
👉 Example: 53 × 11
Split the number: 5 _ 3
Add the digits in between: 5 (5+3) 3 → 583
So, 53 × 11 = 583 instantly! 🚀
JOIN US AT Competitive Test Prep 👈.









