math

i go on long walks to add random license plate numbers togethr to see if they are divisible by 3

if the group of numbers happens to be divisible by 3 i feel a jolt of dopamine, but if they are not divisible by 3 then i dont feel good. 

I can usually tell if a group of numbers will be divisible or not, just based off vibes now.

you can tell whether a number is divisible by three by adding up the digits and checking if that sum is divisible by three!

e.g. 82,974 is divisible by three, and you can tell because 8+2+9+7+4=30 which is 3x10

here's why this works

𝔡𝔢𝔰𝔦𝔤𝔫𝔢𝔯 ⭑ .ᐟ

you can tell whether a number is divisible by three by adding up the digits and checking if that sum is divisible by three!

e.g. 82,974 is divisible by three, and you can tell because 8+2+9+7+4=30 which is 3x10

here's why this works https://www.reddit.com/r/explainlikeimfive/comments/aeshfz/eli5_the_divisible_by_3_trick/

internet rabbit • comms @ /splits • https://www.sonyasupposedly.com/

yeah this literally blew my mind when i realized this,
you can go even further 30... 3+0= 3 / 3 

or lets something adds up to 24... 2+4= 6 /3