The doubling square trick is a simple mathematical shortcut designed for class 6 to 10 students to make multiplication easier. By using the formula (n-1) × (n+1) = n² - 1, students can quickly ...

Think you have hawk eyes? Then find the hidden number expertly placed in this 3D optical illusion rug image in 7 seconds. Only 1% with hawk-eye vision and intelligence can do so. Are you one of those ...