Table:
0
A
B
C
D
E
F
1
Code
County
Former Province
Area (km 2 )
Population Census 2009
Capital
2
1
Mombasa
Coast
212.5
939370
Mombasa (City)
3
2
Kwale
Coast
8,270.3
649931
Kwale
4
3
Kilifi
Coast
12,245.9
1109735
Kilifi
5
4
Tana River
Coast
35,375.8
240075
Hola
6
5
Lamu
Coast
6,497.7
101539
Lamu
7
6
Taita-Taveta
Coast
17,083.9
284657
Voi

Questions and formulas:
Question: what's the capital with area (km 2 ) being 12,245.9
Formula: LET(query1,SUMMARIZE(F1,SUMX(D1)),FILTER(query1,CHOOSECOLS(query1,2)=12245.9))
Formula2: LET(query1,SUMMARIZE(F2:F7,SUMX(D2:D7)),FILTER(query1,CHOOSECOLS(query1,2)=12245.9))
Level: hard
Question: what's the former province with area (km 2 ) being 12,245.9
Formula: LET(query1,SUMMARIZE(C1,SUMX(D1)),FILTER(query1,CHOOSECOLS(query1,2)=12245.9))
Formula2: LET(query1,SUMMARIZE(C2:C7,SUMX(D2:D7)),FILTER(query1,CHOOSECOLS(query1,2)=12245.9))
Level: hard
Question:  how many capital with population census 2009 being 284657
Formula: ROWS(UNIQUE(FILTER(F1, E1=284657)))
Formula2: ROWS(UNIQUE(FILTER(F2:F7, E2:E7=284657)))
Level: medium
Question: what's the area (km 2 ) with population census 2009 being 939370
Formula: SUM(FILTER(D1, E1=939370))
Formula2: SUM(FILTER(D2:D7, E2:E7=939370))
Level: easy
Question: what is the minimum code with area (km 2 ) being 12,245.9
Formula: MIN(FILTER(A1, D1=12245.9))
Formula2: MIN(FILTER(A2:A7, D2:D7=12245.9))
Level: easy
Question: what's the county with code being 2
Formula: LET(query1,SUMMARIZE(B1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,2)=2))
Formula2: LET(query1,SUMMARIZE(B2:B7,SUMX(A2:A7)),FILTER(query1,CHOOSECOLS(query1,2)=2))
Level: hard