31.The average (arithmetic mean) quiz score is closest to which of the following?
A.5 B.6 C.7 D.8 E.9
32.From the set of 6 letters A, B, C, D, E, and F, there are 20 different 3-letter subsets that could be selected.
Column A: The number of 3-letter subsets that include the letter F
Column B: 10
33. In the Ratings for Symptom H table shown which of the following could be r, s, and t, respectively?