'Observation test' challenges you to find out which tank will be filled first

17 December 2023 , 15:00

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Can you work out which tank will be full first? (Image: Twitter)

Puzzles and brain teasers are a good way to train your mind and keep your eyes sharp.

Taking a few minutes each day to get your brain working in different ways helps boost memory and cognitive abilities. So in this latest brain teaser, you're really putting yourself to the test to see if you can figure out which tank will be full of water first from the tap. You also need to take into consideration the blockages and some openings too - so it's not as straightforward as you may think. Originally posted by @quizriddles_, it's got people scratching their heads.

Can you work out which tank will get filled up first? (Twitter)

The image shows an intricate maze of water pipes and tanks, and you're asked to work out which tank will be first to be full. Luckily there's no time limit for this one, so take your time and see if you can get it.

Posted on X, formerly known as Twitter, it's stumped many users who can't disagree on the same answer, but don't worry we will show you the answers at the end. Make sure not to cheat though!

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Have you managed to work it out? Why not ask a friend or family member what they think and see if you both think the same tank? We're about to reveal the answers, so let's see if you got it correct!

Here's the answer (Twitter)

The answer was 13! It's the only tank with a straight path with no blockages and will be full first. Did you manage to guess it correctly? The puzzle had a range of answers online, with many correctly guessing 13, but a few people were certain it was 10, if you look closely at the pipes on tank number 8, the pipe going straight to tank 10 is higher than the pipe going to tank 13, which means it would take longer to reach.

If you enjoyed this optical challenge and it's got you in the mood for more, why not try this mind boggling brain teaser? If you're on the hunt for a Christmas maths question to test your intelligence, then we've got just the thing that will have you scratching your head. According to the website Brain Fans, it's a puzzle for "geniuses", so do you reckon you can solve it? The sum shows a teddy bear, Christmas tree, and present, now your task is to work out the final equation.

Niamh Kirk