SOLUTION: given any number we can multiply the single digits together to end up with another number. we can do the same to the new number and repeat the process again and again until only a

Algebra ->  Finance -> SOLUTION: given any number we can multiply the single digits together to end up with another number. we can do the same to the new number and repeat the process again and again until only a       Log On


   

Question 994581: given any number we can multiply the single digits together to end up with another number. we can do the same to the new number and repeat the process again and again until only a single digit number is left. if you start with 123456789, what single digit number do you end up with
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
Since red%282%29%2Ared%285%29=10 ,
the product of all digits of 123456789 will be a multiple of 10 :
1%2Ared%282%29%2A3%2A4%2Ared%285%29%2A6%2A7%2A8%2A9=10%2A%281%2A3%2A4%2A6%2A7%2A8%2A9%29 ,
so the last digit of that product will be 0 ,
and multiplying all the digits of that product will yield highlight%280%29 .