Question 214341
The 1st digit can be 1 through 9 (can't be 0)
The 8 remaining digits can each be 0 through 9
{{{9*10^8}}} is the possible number of 9-digit numbers
if you dn't care about repeats
But, with no repeats:
{{{9*9*8*7*6*5*4*3*2 = 3265920}}} possible