Table:
0
A
B
C
D
E
1
DVD Name
Episodes
Region 1
Region 2
Region 4
2
Season One
24
N/A
April 26, 2010
Sept, 2010
3
Season Two
18
N/A
September 6, 2010
N/A
4
Season Three
18
N/A
N/A
N/A
5
Season Four
18
N/A
N/A
N/A
6
Season Five
18
N/A
N/A
N/A

Questions and formulas:
Question: What is the smallest number of episodes in a season?
Formula: MIN(B1)
Formula2: MIN(B2:B6)
Level: easy
Question: When was Season Three premiered in region 2?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="Season Three"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,A2:A6="Season Three"),4))
Level: medium