Question

In the July 23, 1990 issue of the Times magazine, it was reported that 600,000 new cases of skin conditions would be diagnosed in the United States during 1990. Most of the conditions would be:

1. malignant melanoma

2. carcinoma in the basal cells

3. squamous cell carcinoma

4. the remaining conditions were classified as "other"

If two cases of condition are randomly selected from a dermatologist's records, provide the sample space for the possible combinations of the records.

Answer 1