Whether they involve tricky maths problems, age-related riddles, or optical illusions, these puzzles have one thing in common—they always keep our brains engaged and puzzled. (Also read: Internet is ...

Consider it a warm-up or an appetizer, if you will, for the queries found in more traditional trivia questions challenges.

Test your problem-solving skills with this challenging puzzle that only 2% of people can solve. Are you up for the challenge?