Question

hard probability question.. help plz?

Answer 1

I dunno :S

Answer 2

\[4^{4} = 256\]

Answer 3

want me to explain?

Answer 4

@kevinkeegan Please do

Answer 5

okay

you have 4 choices tiles to use WWW WWB WBWetc...
each will take up 3 slots and you have 10 slots only
so we use 3 diff groups( groups as in WWW= 1grp, WBW=1grp an so on) first,
taking up 9 slots, so the probability of arranging the 3 grps = 4X4X4 ;
now we left with 1 last slot for the single white tile;
and we can put the white tiles @ 4 different places( trying drawing out):
so that gives us extra 4 different combos and therefore, total probability= 4X4X4X4

Answer 6

arrow point to last slot for single white tile