Table:
0
A
B
C
D
E
1
Week
Date
Opponent
Result
Attendance
2
1
September 29, 1957
Philadelphia Eagles
W 17-13
62,506
3
2
October 6, 1957
at San Francisco 49ers
L 23-20
59,637
4
3
October 13, 1957
at Detroit Lions
L 10-7
55,914
5
4
October 20, 1957
at Chicago Bears
L 34-26
47,337
6
5
October 27, 1957
Detroit Lions
W 35-17
77,314
7
6
November 3, 1957
Chicago Bears
L 16-10
80,456
8
7
November 10, 1957
San Francisco 49ers
W 37-24
102,368
9
8
November 17, 1957
at Green Bay Packers
W 31-27
19,540
10
9
November 24, 1957
at Cleveland Browns
L 45-31
65,407
11
10
December 1, 1957
at Baltimore Colts
L 31-14
52,060
12
11
December 8, 1957
Green Bay Packers
W 42-17
70,572
13
12
December 15, 1957
Baltimore Colts
W 37-21
52,560

Questions and formulas:
Question: Which Week has an Opponent of san francisco 49ers?
Formula: SUMIFS(A1,C1,"san francisco 49ers")
Formula2: SUMIFS(A2:A13,C2:C13,"san francisco 49ers")
Level: easy