Table:
0
A
B
C
D
E
1
Episode
Broadcast date
Run time
Viewers (in millions)
Archive
2
" Episode One "
20May1972
25:04
7.6
PAL colour conversion
3
" Episode Two "
27May1972
25:05
7.4
PAL colour conversion
4
" Episode Three "
3June1972
23:59
8.1
PAL colour conversion
5
" Episode Four "
10June1972
23:55
7.6
PAL colour conversion
6
" Episode Five "
17June1972
24:29
6.0
PAL colour conversion
7
" Episode Six "
24June1972
24:55
7.6
PAL colour conversion

Questions and formulas:
Question: Name the episode for run time 25:05
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="25:05"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="25:05"),1))
Level: medium
Question: Name the broadcast date for run timke of 25:04
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="25:04"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="25:04"),2))
Level: medium
Question: Name the archive for run time of 23:55
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="23:55"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7="23:55"),5))
Level: medium
Question: Name the broadcast date for 7.4 viewers
Formula: LET(query1,SUMMARIZE(B1,SUMX(D1)),FILTER(query1,CHOOSECOLS(query1,2)=7.4))
Formula2: LET(query1,SUMMARIZE(B2:B7,SUMX(D2:D7)),FILTER(query1,CHOOSECOLS(query1,2)=7.4))
Level: hard
Question: Name the broadcast date for 6.0 viewers
Formula: LET(query1,SUMMARIZE(B1,SUMX(D1)),FILTER(query1,CHOOSECOLS(query1,2)=6))
Formula2: LET(query1,SUMMARIZE(B2:B7,SUMX(D2:D7)),FILTER(query1,CHOOSECOLS(query1,2)=6))
Level: hard