Math(s)
Math(s)
23 comments
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51 --> 5+1 = 6, 6 is divisible by 3. This means that 51 is divisible by 3.
60 is divisible by 3, 60/3 = 20.
51 is 9 less than 60. 9 is divisible by 3. 9/3 = 3.
20 - 3 = 17.
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Only way I managed it to make sense is:
17 is 10 and 7
10 * 3 = 30
7 * 3 = 21
30 + 21 = 51
Phuu air. I can breath again. Don't do this to me.
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This is how I see it, 30 + 21, doesn’t come up that often obviously, but also we don’t have to love every composite number. In fact, we hates most of them. Add 51 to the pile.
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"This is called 'maths'. Or 'math' if you're American, as they're only allowed to have one. Due to... I don't know budget cuts or something". — ASHEN, Stuart
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Someone’s never played darts, I see.
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Or at least not well.
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That's why you always go for multiples of 6 plus or minus 1 that are not multiples of 5 or 11.
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57 / 19 ...
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30+21 🙂
23 comments
51 has to be the non-prime number that feels the most prime
For me it’s Grothendieck's prime.
Well, on the surface, it's just 60-3, so clearly divisible by 3 itself. Now 221, that's some fuckery.
Plz don't groth on my dieck, that's just rude.
Grothendieck's Prime tripped me up in a maths competition in high school. i had manually stored a list of primes in my calculator, and one of the puzzles involved primes and deducing the combination to a lock from certain clues. my list of primes erroneously included 57, which almost made my team fail the level, until i realized my error.
All the magic goes when you understand it's 30+21
I always thought it's 31+20