of patterns that we can select.
from this i found that..
where b--y represents the pattern of 7 colors that starts from black and ends in y. b = black and b = blue.
only in the last two patterns will there be two blues.
experts, a little help please.
the question basically asks the probability of the first space being either blue or red and as there are total of 5 colors then the probability is simply 2/5. 