Table:
0
A
B
C
D
E
F
1
Code
County
Former Province
Area (km 2 )
Population Census 2009
Capital
2
18
Nyandarua
Central
3,107.7
596268
Ol Kalou
3
19
Nyeri
Central
2,361.0
693558
Nyeri
4
20
Kirinyaga
Central
1,205.4
528054
Kerugoya / Kutus
5
21
Murang'a
Central
2,325.8
942581
Murang'a
6
22
Kiambu
Central
2,449.2
1623282
Kiambu

Questions and formulas:
Question: How many counties have an area of 1,205.4 km2?
Formula: SUM(FILTER(A1, D1=1205.4))
Formula2: SUM(FILTER(A2:A6, D2:D6=1205.4))
Level: easy
Question: What capital has a population of 596268?
Formula: LET(query1,SUMMARIZE(F1,SUMX(E1)),FILTER(query1,CHOOSECOLS(query1,2)=596268))
Formula2: LET(query1,SUMMARIZE(F2:F6,SUMX(E2:E6)),FILTER(query1,CHOOSECOLS(query1,2)=596268))
Level: hard