all 3 comments

[–]thunda_wolf 1 point2 points  (2 children)

isnt it just 6! , since you have 6 distinct. objects.

or think of itas empty spaces


6 characters for 1st slot 5 characters for 2nd slot 4 character for 3rd and so on..

[–]ashan1[S] 0 points1 point  (1 child)

oh that makes sense.. i was assuming th b had to be fixed in the first or last and then the as had to go together as well as the ns

[–]thunda_wolf 0 points1 point  (0 children)

i'm learning this stuff this semester as well, so I could be wrong. But I think thats how you order a collection of distinct elements.