Ready to test your brainpower with a fun riddle? Here’s a puzzle that might seem simple at first, but will challenge your focus and observation skills. You’ve got 10 seconds—let’s see if you can figure it out.
Take a look at the picture below: Which tank will fill up first?
Got your answer? Let’s break it down.
As water fills bucket A, it will eventually flow through the pipe into bucket B, then onto C. But here’s where things get tricky—bucket C has two pipes draining water out of it. One of these pipes, feeding into D, is blocked. So, tanks D, E, and G won’t fill up at all.
Next, water flows into tank J. But hold on—J also has two pipes draining it. At this point, you might think the bottommost pipe would drain the water, but that’s not the case.
The pipe at the top is where the water flows out, so J won’t fill up until it reaches that pipe’s level. But before that happens, another pipe feeding L will drain the water, preventing J from ever fully filling.
And here’s the final twist: because tank H is blocked, bucket F will be the first to fill up!
How’d you do? Was that a tough one?
So again F filled up first. So that settles it that the answer is F both logically and scientifically. If you answered F, you are correct.
