A party supply store sells noisemakers arranged on display such that each of the three different colors of noisemakers, red, blue, and purple are consecutive in a repeating pattern. If four consecutively displayed noisemakers are purchased, what is the probability that two of the noisemakers are purple?  Choose the correct choice from the following.
A) 2/3
B) 1/9
C) 2/9
D) 1/3
E) 2/7
After red, blue, and purple, the next noisemakers can be of any given three colours, therefore we have total three possibilites, out of which we need purple i.e. 1 therefore prob is 1/3. Correct answer is 1/3.
<result>D</result>
A party supply store sells noisemakers arranged on display such that each of the three different colors of noisemakers, red, blue, and purple are consecutive in a repeating pattern. If four consecutively displayed noisemakers are purchased, what is the probability that two of the noisemakers are purple?