Optical illusion puzzles have been there for centuries and these are fun challenges that are designed to play tricks on our eyes and brains. Optical illusions work on a simple principle where it ...

The conjecture predicts that whether one integer has an even or odd number of prime factors does not influence whether the next or previous integer also has an even or odd number of prime factors.

An optical illusion is a visual phenomenon in which our perception of an image differs from objective reality. This image is perceived as a motion geometric distortion illusion, where the image seems ...