Two roommates live in a dorm. their mother's both shop at the same stores and have the same taste, so they both have the same 3 pairs of shoes, the same 3 pairs of pants, the same 3 shirts, and the same three sweaters. how many ways can they dress so that are not both dressed exactly the same.

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old