If you're looking for a fun and challenging way to exercise your brain, brainteasers are the way to go.
These puzzles can take many shapes, from wordplay to logic problems to riddles,
but they all aim to challenge your brain and sharpen your problem-solving abilities.
A splash of imagination is required to solve some brainteasers, while logic is essential for others.
The ability to think laterally, or to view situations from other angles, is frequently crucial.
The ability to think creatively, fostered by brainteasers, is useful in many contexts, from school and work to making important life decisions.
Are you prepared to put your abilities to the test? See if you can find the hidden number '0' in the image below.
Identifying the concealed number in under eleven seconds adds an extra layer of difficulty to this test.