mairelon:

yugidoe:

blowjob-bandit:

mushj1:

何か目からウロコだなぁ

How am I just now seeing this pattern for the first time?

Because we’re not taught to think like this in schools. It’s all memorization, we’re not taught about patterns with numbers.

each answer ads up to nine, as well. e.g 8×9=72 (7+2=9), 6×9=54 (5+4)