A tricky maths puzzle that only 10% of people can solve has left people scratching their heads online - but it actually has ...

A good brain teaser or riddle can provide hours of entertainment for kids and adults. From math puzzles to word teasers, here are the best ones.

Test your observation skills with this viral optical illusion! In a grid filled with 3s, 9s, and 0s, a single number 6 is cleverly hidden. Can you spot it within 10 seconds?