A FIENDISH Playbuzz puzzle asks users to spot which number is missing from a sequence going from one to 49.

It's fairly straightforward but can you do it in THREE SECONDS?

The aim of the game is to spot the missing digits as quickly as you possibly can - without having to count through the numbers.

So, how quickly can you spot it?

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If that has whet your appetite for quizzes, why not find out if your colour vision is top notch too?

Only people with superior colour vision can pass this new test so if you think you have exceptional eyesight give it a go and see if you can get top marks.

The recent Playbuzz quiz comes a few months after these picture challenges that ask you to select the darkest shade.