Readers are challenged to spot the odd number in a grid filled with the number ... Be aware of common tricks like color contrasts, depth illusions, and ambiguous shapes. Finally, practice ...

Optical illusions challenge the brain's perception by presenting visually perceived images that differ from reality. This article introduces a puzzle featuring a grid of the number 45, with a ...

This information must be provided before writing any content to the worksheet, thus the number, width and styles of the columns must be known in advance. Unformatted creates a column description that ...