@[email protected] to [email protected] • 2 days agoMath(s)lemmy.worldmessage-square34fedilinkarrow-up1568
arrow-up1568imageMath(s)lemmy.world@[email protected] to [email protected] • 2 days agomessage-square34fedilink
minus-square@[email protected]linkfedilink6•18 hours agoAll the magic goes when you understand it’s 30+21
minus-square@[email protected]linkfedilink4•13 hours agoBecause 30 and 21 are both divisible by the same number, 3.
All the magic goes when you understand it’s 30+21
I always thought it’s 31+20
Why? 19 is 15+4 but is still prime?
Because 30 and 21 are both divisible by the same number, 3.
Exactly 3(10+7)