26x26x26x10x10x10=17,576,000 same thing

THAT IS THE MOST BRANDS YOU CAN HAVE WITH LETTERS STARTING FIRST 

 

BUT YOU SAID ANY COMBINTION..so you formula does not account for numbers first ..

not same thing  26 is letters  and 10 is numbers

 yes you get the same answer if you  do  10X 10 X10 X 26 X 26 X 26 = 17,576,000

so you have to figure the varibles 

but with  the 10 x formula  you would have numbers starting first instead of your letters....

SO   that is more brands  RIGHT  THINK WHAT I AM SAYING