You have the eyes of a hawk if you can spot the odd number in this sequence in less than seven seconds

THIS stunning optical illusion will put your eyes to the test.

The puzzle asks you to find an odd number in this sequence, and if you can do it in less than seven seconds, you have the eyes of a hawk.

Can you spot an unusual sequence in a busy image? Credit: Fresherslive

This new optical illusion shows the image of the number 775 printed over and over again – but there’s a strange one.

The number 725 appears somewhere along the sequence of numbers – and the test is simple, can you spot it?

Although the test is relatively simple, it is not easy to spot the missing number.

And it’s even harder to try to spot it in a seven-second time frame.

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If you find it difficult, don’t worry, we recommend scanning each individual line.

Still need advice?

Keep your eyes focused on the middle number of the three-digit string.

And if it’s still too hard, focus on the digits near the bottom right corner of the puzzle.

If you’ve given up, you can scroll down to see the unusual string circled.

For those who enjoyed this challenge, why not test your eyesight and see if you can spot the wild animal hiding in this grocery box?

Or find out if you have a high IQ and see if you can find the brush hidden in this sketch of a sleeping cheetah.

And this optical illusion challenges you to spot the correctly spelled word in less than ten seconds.

Others would rather try to find the rabbit hidden inside this picture in less than five seconds.

A strange sequence was in the bottom right corner of the puzzle Credits: Fresherslive