Coffee puzzle leaves Twitter totally stumped – which cup would be filled up first?

Daily Mail ^ | 10 November 2017 | Bianca London

[eclecticEel]

All routes but one are blocked off, gravity has no say in the matter.

[PIF]

I’ll take # 5 but only if it is Espresso ...

[JudyinCanada]

Nope 5. I see now the error of my ways. My mind was not clear as I was waiting for my coffee.

[Carriage Hill]

I’ve had the 3 & 6 cup carafe, since mid-1980s, and filters are easy to get since the mfgr carries them:

http://www.chemexcoffeemaker.com/filters.html

[anton]

I forgot the /s in my post

[dforest]

I picked 4 because the ewill go 1st to the lowest level

[dforest]

It is probably 9, just noticed the closed tube

[Ambrosia]

9

[SunTzuWu]

#5 is the only one that will receive coffee.

[King Moonracer]

9 has a blockage

[King Moonracer]

5 is the only one not blocked

[Daffynition]

HAHAHA!

Shoulda got a Dish. :)

[MileHi]

#9

[Rannug]

How can something so simple show the stupidity of so many?

[mewzilla]

I know, Your Majesty, I know. 😢

[RandallFlagg]

It’s #2 because she weighs the same as a duck and she’s made of wood.

[Robert A Cook PE]

5 is the only on possible, the rest have blocked tubes.

[savedbygrace]

The only cup that is not blocked is 5, but one person made the point that there is not enough coffee in the pot to allow enough coffee to reach 5 to fill it up.

But if not for that, the correct answer would be 5.

[Lady Heron]

4

[whodathunkit]

The puzzle is impossible to solve without more information. We see only 2 dimensions. The 3rd dimension gives depth (not visible) that can vary between reservoirs. Without this dimension, pipe size and knowing the rate of flow there is no way to determine the answer.