Simple puzzle

[Axtremus]

Saw this as a “thumbnail” screenshot on YouTube. I haven’t watch that video. I think I solved it. It goes like this:

9 = 72
8 = 56
7 = 42
6 = 30
...
3 = ?

Have fun!

[jon-nyc]

Klaus is going to go ballistic.

:::

6

:::

[AndyD]

LOL Perfect difficulty level. Get all that satisfaction for 10 seconds brainstrain and then move on with your life. The reason I rarely play chess these days

[taiwan_girl]

@AndyD said in Simple puzzle:

LOL Perfect difficulty level. Get all that satisfaction for 10 seconds brainstrain and then move on with your life. The reason I rarely play chess these days

Yep. I agree. That was fun

Either Jon and I both got it right or we both got it wrong. LOL

[Klaus]

@jon-nyc said in Simple puzzle:

Klaus is going to go ballistic.

Indeed! Why do we always have to abuse the poor equality sign in such a bizarre way?

Why not write: We are looking for an operation f such that f(9) = 72, f(8) = 56, ..."?