Table:
0
A
B
C
D
E
F
1
#
Episode
Writer
Director
Original air date
Viewing figure
2
1
"Episode 1"
Bill Gallagher
Charles Palmer
13January2008
7.27 million
3
2
"Episode 2"
Bill Gallagher
Charles Palmer
20January2008
7.01 million
4
3
"Episode 3"
Bill Gallagher
Charles Palmer
27January2008
6.66 million
5
4
"Episode 4"
Paul Rutman
John Greening
3February2008
6.72 million
6
5
"Episode 5"
Bill Gallagher
Charles Palmer
10February2008
6.85 million
7
6
"Episode 6"
Bill Gallagher
John Greening
17February2008
6.68 million
8
7
"Episode 7"
Carolyn Bonnyman
Marc Jobst
24February2008
6.70 million
9
8
"Episode 8"
Gaby Chiappe
Marc Jobst
2March2008
6.48 million
10
9
"Episode 9"
Bill Gallagher
John Greening
9March2008
6.21 million

Questions and formulas:
Question: How many different directors are associated with the writer Gaby Chiappe?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="Gaby Chiappe"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,C2:C10="Gaby Chiappe"),4))
Level: medium
Question: What writers are associated with a viewing figure of 7.01 million?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="7.01 million"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,F2:F10="7.01 million"),3))
Level: medium
Question: What are all episodes with a viewing figure of 6.72 million?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="6.72 million"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,F2:F10="6.72 million"),2))
Level: medium
Question: What original air dates are associated with a viewing figure of 7.27 million?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="7.27 million"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F10,F2:F10="7.27 million"),5))
Level: medium