Table:
0
A
B
C
D
E
F
1
Team
Home city
Home ground
In Toppserien since
First appearance
Seasons
2
Amazon Grimstad
Grimstad
JJ Ugland Stadion
2006
2006
8
3
Arna-Bjørnar
Ytre Arna (Bergen)
Arna Idrettspark
2006
1997
16
4
Avaldsnes
Avaldsnes
Avaldsnes Idrettssenter
2013
2013
1
5
Klepp
Kleppe (Stavanger)
Klepp Stadion
1987
1987
27
6
Kolbotn
Kolbotn (Oslo)
Sofiemyr
1995
1995
19
7
LSK Kvinner
Lillestrøm (Oslo)
LSK-Hallen
1987
1987
27
8
Medkila
Harstad
Harstad Stadion
2013
2004
3
9
Røa
Oslo
Røabanen
2001
2001
13
10
Sandviken
Bergen
Stemmemyren
2011
1987
21
11
Stabæk
Bærum (Oslo)
Nadderud Stadion
2009
2009
5
12
Trondheims-Ørn
Trondheim
DnB Nor Arena
1987
1987
27

Questions and formulas:
Question: How many teams have been in Topperserien for 8 seasons? 
Formula: ROWS(UNIQUE(FILTER(A1, F1=8)))
Formula2: ROWS(UNIQUE(FILTER(A2:A12, F2:F12=8)))
Level: medium
Question: What is the maximum number of seasons for any team? 
Formula: MAX(F1)
Formula2: MAX(F2:F12)
Level: easy
Question: Which teams homeeground is Stemmemyren? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="Stemmemyren"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F12,C2:C12="Stemmemyren"),1))
Level: medium
Question: What is the home ground for the team whose home city is Trondheim with 27 seasons? 
Formula: LET(query1,LET(query1,FILTER(A1:F1,B1="Trondheim"),SUMMARIZE(CHOOSECOLS(query1,3),SUMX(CHOOSECOLS(query1,6)))),FILTER(query1,CHOOSECOLS(query1,2)=27))
Formula2: LET(query1,LET(query1,FILTER(A2:F12,B2:B12="Trondheim"),SUMMARIZE(CHOOSECOLS(query1,3),SUMX(CHOOSECOLS(query1,6)))),FILTER(query1,CHOOSECOLS(query1,2)=27))
Level: hard
Question: What is the home city for the team whose home ground is dnb nor arena? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="DnB Nor Arena"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F12,C2:C12="DnB Nor Arena"),2))
Level: medium
Question: What Home city has the home ground Klepp stadion? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="Klepp Stadion"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F12,C2:C12="Klepp Stadion"),2))
Level: medium