minus-square@[email protected]linkfedilink23•1 day agoWell, on the surface, it’s just 60-3, so clearly divisible by 3 itself. Now 221, that’s some fuckery.
minus-square@Alenaldalink4•6 hours agoWhen I was young I learned that when you add up all the numbers if that number is a multiple of 3 than the original number is also divisible by 3. So 51, 5+1=6 and 6 divisible by 3 and so must 51.
minus-square@[email protected]linkfedilink2•10 hours agoDammit, it was right in the post, why did that take me so long?
Well, on the surface, it’s just 60-3, so clearly divisible by 3 itself. Now 221, that’s some fuckery.
When I was young I learned that when you add up all the numbers if that number is a multiple of 3 than the original number is also divisible by 3. So 51, 5+1=6 and 6 divisible by 3 and so must 51.
Dammit, it was right in the post, why did that take me so long?