Science: Balancing the books. BB or not BB, that is the question. I'm looking over a four-leaf clover. Impossible, that's all! A matter of scale. Kaleidoscope in the sky. The symbolminded chemist. The ...

Brain teasers have long fascinated puzzle enthusiasts, offering a fun yet challenging way to test one’s observation skills and mental agility. Whether it’s an optical illusion, a number conundrum, or ...

Examine the picture closely. It is packed with the repeated sequence “7E8”. Yet hidden within is the figure 7F8. Hint: Aim your gaze toward the centre of the picture. Examine carefully, the number ...

Adam's new arithmetic : arithmetic in which the principles of operating by numbers are analytically explained ... / by Daniel Adams ... designed for the use of schools and academies in the United ...