Answer:
30
Step-by-step explanation:
4(8)-2=32-2=30
Hope it helps! :)
Below.
With replacement the sample space is:
(RR), (GG), (BB), (RG), (RB), (GR), (GB), (BR), (BG).
Without replacement you will not get 2 of the same colour, so it is
(RG), (RB), (GR), (GB), (BR), (BG).