2011-06-05, 05:08 PM
7/10
misread 9 >.<
missed 2 and 4
i don't care about 2... anyone want to explain 4? specifically, from the statement i wrote 2 equations that reduced to x=2n, so x must be even. why is that wrong?
edit: nevermind, there's no integer condition stipulated...
the trick i used for 5 was to ask myself when multiples of 5 within 2 of a multiple of 9... 9, 10 ; 18, 20 but 19 is odd ; 27, 25 and 26 is even ; 36, 35 ; 45, 45 ... ; 54, 55 ; etc
misread 9 >.<
missed 2 and 4
i don't care about 2... anyone want to explain 4? specifically, from the statement i wrote 2 equations that reduced to x=2n, so x must be even. why is that wrong?
edit: nevermind, there's no integer condition stipulated...
the trick i used for 5 was to ask myself when multiples of 5 within 2 of a multiple of 9... 9, 10 ; 18, 20 but 19 is odd ; 27, 25 and 26 is even ; 36, 35 ; 45, 45 ... ; 54, 55 ; etc