New Delhi: In a development that has stirred the mathematical world, two researchers have taken a route to unlock hidden patterns in prime numbers – one that blends old wisdom with unexpected tools.

This is a simple image of grids. Every box shows the same number: 758. But hidden somewhere inside this neat Excel-style ...

Finding the hidden number in this zigzag optical illusion in under 21 seconds is a sign of above average vision. Take the test and find out what your eyes are capable of.

Optical illusion puzzles are very entertaining and puzzling as they are enjoyable, unexpected, and most of the time you cannot figure out how your eyes were able to deceive you that much. These brain ...