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Only one in four hawk-eyed geniuses can find the odd-one-out number sequence in under 40 seconds

Published on April 25, 2025 at 10:31 AM

TEST your IQ to the max with this tricky brainteaser, that will have you scratching your head trying to solve it.

If you can spot the odd one out number sequence in just 40 seconds, you have the eyes of a hawk.

Number sequence puzzle.
If you can spot the odd one out number sequence in just 40 seconds, you have the eyes of a hawk

Whether you're trying to , or , this puzzle will prove a challenge to many readers.

Put your observation skillsto the test and figure out whether you have what it takes to spot the ‘imposter' in just a few seconds.

Make sure to set your stopwatch before undertaking this challenge, to make it extra hard for yourself.

If you can do it in under 40 seconds, you are said to have 20/20 vision.

This brainteaser, provided by Tombolashows eight rows of number sequences, with numbers starting small, and increasing along the row.

At first glance, it looks like the numbers on each row increase by the same amount each time.

However, the most eagle eyed readers will be able to spot immediately that this is not the case.

It may be tricky to spot it, but one of the rows follows a different number pattern to the rest.

Unless you're lucky enough to find the odd one out immediately, we recommend analysing the pattern very closely to spot the answer.

The visual deception of this image will have you peeling your eyes, but the payoff is worth it.

If you need a hint, we recommend focusing on the bottom half of the image.

The odd one out can be uncovered by looking at the third number in one of the rows.

If you're looking for more of a challenge, this brainteaser encourages car lovers to in less than 15 seconds.

Another tricky puzzle asks hawk-eyed readers to hidden amongst a sea of football fans.

If that's still not hard enough for you, then have a go atin less than five seconds.

Lastly, puzzle fanatics have been left scratching their heads trying toin just 12 seconds.

Coming back to our challenge, were you able to solve it in under 40 seconds?

For those struggling to find the answer, we have marked the solution for you.

Illustration of a number sequence puzzle.
Did you crack the code?

The odd one out if the sequence that goes up in threes, instead of the numbers doubling each time.

Did you crack the code?

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