Originally posted by eldragonflyoh,...so my math is not clear.....
Bad joke. i don't understand what relationship you are trying to show, i can't see the connection that you are trying to show/imply.
Originally posted by joe shmoyou are trying to prove that
oh,...so my math is not clear.....
if the digits are consecutive ....56, 45,34,67,89,23,ect....then adding 9 results in the reverse of the consecutive digits...so the first row plus nine = 65,54,43,76,98,32
hope that clears it up
Originally posted by apawnahh,..I guess if it did 123+90 would have to = 321
>>how is it proven for any number of consecutive digits, when the number added or subtracted = 9*10^(k-2), where = k the number of digits
It does not hold in general, for k=3 for instance 123 + 90 = 213