Scientists feel that tests and riddles stimulate our brains and improve their performance. It’s similar to going to the gym for the brain: the more you exercise it, the sharper it becomes. Some of these tests are simple, while others are more difficult, but they are all enjoyable.
1/ Can you find 5 differences?
2/ Which one is the top view of the pyramid?
3/ Find 4 differences
4/ Connect all the stars with only 4 straight lines
5/ In less than 25 seconds, can you spot the odd one out?
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