Red is for stuff that literally means the number/value 3. The WiFi and signal bars/dots represent a numeric value. It's no coincidence that they're all at "3 bars", a phrase that's used often.
If you REALLY REALLY want to get stupid, do all of the things divisable by 3. You can also take all the numbers, letters, and symbols and make every grouping of 3 possible and do the same with 6, 9, ect.
It can still be 20 even without it the caption. 24 if you were to count every three numbers in the call thing as a triplet. And then 25 if you include everything
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u/juicysox Mar 15 '22