Table:
0
A
B
C
D
E
1
Week
Date
Opponent
Result
Attendance
2
1
September 6, 1981
at St. Louis Cardinals
W 20–7
50,351
3
2
September 10, 1981
Pittsburgh Steelers
W 30–10
75,059
4
3
September 20, 1981
at Houston Oilers
W 16–10
47,379
5
4
September 27, 1981
at Baltimore Colts
W 31–28
41,630
6
5
October 4, 1981
New York Jets
T 28–28
68,723
7
6
October 12, 1981
at Buffalo Bills
L 31–21
78,576
8
7
October 18, 1981
Washington Redskins
W 13–10
47,367
9
8
October 25, 1981
at Dallas Cowboys
L 28–27
64,221
10
9
November 1, 1981
Baltimore Colts
W 27–10
46,061
11
10
November 8, 1981
at New England Patriots
W 30–27
60,436
12
11
November 15, 1981
Oakland Raiders
L 33–17
61,777
13
12
November 22, 1981
at New York Jets
L 16–15
59,962
14
13
November 30, 1981
Philadelphia Eagles
W 13–10
67,797
15
14
December 6, 1981
New England Patriots
W 24–14
50,421
16
15
December 13, 1981
at Kansas City Chiefs
W 17–7
57,407
17
16
December 19, 1981
Buffalo Bills
W 16–6
72,956

Questions and formulas:
Question: Who were the opponents for week 12?
Formula: LET(query1,SUMMARIZE(C1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,2)=12))
Formula2: LET(query1,SUMMARIZE(C2:C17,SUMX(A2:A17)),FILTER(query1,CHOOSECOLS(query1,2)=12))
Level: hard