gigastasioFeb 20

I've had this puzzle on my phone for years. Every few months I'd glance at it and try and solve it. Last night, as I was eating dinner, I finally figured out the answer!

https://sh.itjust.works/post/55641581

Show threadEnkrodFeb 20

Hah, took me nearly a minute.

Tap for spoiler

Add the digits on both sides. ? = 12

But I only got it so quickly because I enjoyed a similar puzzle once.

1
11
21
1211
111221
312211
…

continue the series.

Show threadstoly
Please explain more
Feb 21 at 1:30amWeb
Show threadEnkrodFeb 21
Is this an honest question for information or a sarcastic slap on the wrist because my puzzle is basically a hint for OPs?
Show threadstolyFeb 21
No I’m dumb but eventually figured it out after reading literally every comment in the thread. This one genuinely made me feel stupid.