Putting your eyes to the test with fun picture puzzles and riddles is not only fun but also very good for your overall performance.

If you wish to boost your observation skills and make sure you’ll never again miss out on an important detail, you’ve come to the right place.

Today, we’ve prepared for you two very special challenges that only the minority of viewers managed to pass. Are you ready for action? Let’s go!

In the picture below, you can see numbers from 0 to 9 neatly organized into ten groups. Each group has four numbers of the same kind.

Somewhere in that image, however, there is a catch – a big mistake that you should find in less than one minute to pass the test.

While some viewers managed to solve this riddle in just a few seconds, others can’t figure it out at all. Where do you stand?

Have you spotted the error yet or do you need some help? The mistake concerns one of the numbers in the picture.

You’re looking for an odd one out – a number that actually isn’t even a number!

Once you’re done guessing, scroll down to view the answer:

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If you passed the first test, you’ll be happy to know we have another one waiting for you below.

Once again, your task will be to point out a big oddity. This time, the error can be found in a picture showing a series of playing cards. Have a look!

What are your first thoughts after inspecting the image? Did you spot the mistake right away or do you need some more time?

One of the cards in the picture above does not exist and therefore has no place among other cards. But which one?

Now’s your last chance to spot the fake card because the solution is coming right up!

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How quickly did you solve these visual puzzles? Let us know in the comments and don’t forget to SHARE this post with your family and friends. For more fun tests, follow us on Facebook!