An individual can be classified as male or female with red, brown, black, or blond hair and with brown, blue, or green eyes. 

(a) How many different classifications are possible (for ex-ample, male, red-headed, blue-eyed)

(b) Construct a tree diagram to determine the sample space. 

(c) If each outcome is equally likely, determine the prob-ability that the individual will be a male with black hair and blue eyes.

(d) Determine the probability that the individual will be a female with blond hair.

Use the counting principle to determine the answer to part (a). Assume that each event is equally likely to occur.