Why do we always have people questioning the base of the numbers or asking for proofs?
-
-
-
As a wise man once said: if it works only in base 10, it's numerology, not number theory.
- 1 more reply
New conversation -
-
-
That is so weird. I had to confirm it by trying lots of combinations in Mathematica to believe it was true.
-
Makes sense b/c every (eg) 6-digit palindrome can be made by adding & subtracting multiples of 001100, 011110, 111111, all divisible by 11
- 2 more replies
New conversation -
-
-
I discovered you can do this when I was 14. But basically any number times 11 works. I recently discovered the same method works for every number. Eg 16.5 is 11 x 1.5, use the method above eg 16.5 x 52 gets 572 then times by 1.5 and boom 858. Eg 33 times 56 gets 616 times 3 =1848pic.twitter.com/KKn5mPh8wF
-
Using the same method you can make an alternative version of Pascal’s trianglepic.twitter.com/U28ZXxCnmS
- 4 more replies
New conversation -
-
-
True for any base, follows from (n^2i +1) = (n+1) * (n^(2i-1)-n^(2i-2)+...-n+1) (since any even-digit palindromic number is a sum of multiples of (n^2i+1) for various i)
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
-
11, one of the coolest numbers besides 42.
End of conversation
New conversation -
-
-
People old enough to need to do math in their heads know this the other way around, as the shortcut for multiplying by 11. I haven’t seen it this way around before, but I like it!
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.