Question
How many six digit numbers will form from the given ten numbers from 0,1,2,3,4,5,6,7,8,9,0 ? Without repitition ? And without repitition ? And the first is not '0' ?
Answers
oobleck
without: 10P6
with: 10^6
1st nonzero with: 9*10^5
1st without: ___
with: 10^6
1st nonzero with: 9*10^5
1st without: ___