how many formations is possible by selecting a digit * to pik3

Help excel in the pick 3 to repeat a digit.
In Excel 2010 Example = what are the total combinations
A digit repeated the last draw?
Ex = 458
How many formations with 8 digit, how many and how many 5 with 4?

in the 3 digit formation with 5 may have can not have 4.8 in the formation of 8 can not have 4.5 and formçao 4 can not have 5.8, example
the digit 4 = 469 =corret 451 error because of 5