Table:
0
A
B
C
D
E
F
1
Country
Area km²
Population
Population density per km²
HDI (2011)
Capital
2
China (PRC)
9640011
1339724852
138
0.699
Beijing
3
Hong Kong (PRC)
1104
7061200
6390
0.898
Hong Kong
4
Japan
377930
127950000
337
0.901
Tokyo
5
Macau (PRC)
30
556800
18662
No Data
Macau
6
Mongolia
1564100
2809600
2
0.653
Ulaanbaatar
7
North Korea
120538
24346000
198
No Data
Pyongyang
8
South Korea
100210
48988833
500
0.897
Seoul

Questions and formulas:
Question: Which capitals have an area of exactly 377930 square km?
Formula: LET(query1,SUMMARIZE(F1,SUMX(B1)),FILTER(query1,CHOOSECOLS(query1,2)=377930))
Formula2: LET(query1,SUMMARIZE(F2:F8,SUMX(B2:B8)),FILTER(query1,CHOOSECOLS(query1,2)=377930))
Level: hard
Question: What is the total number of capitals that have an area of exactly 1104 square km?
Formula: LET(query1,SUMMARIZE(F1,SUMX(B1)),FILTER(query1,CHOOSECOLS(query1,2)=1104))
Formula2: LET(query1,SUMMARIZE(F2:F8,SUMX(B2:B8)),FILTER(query1,CHOOSECOLS(query1,2)=1104))
Level: hard
Question: What capital has a population of exactly 1339724852?
Formula: LET(query1,SUMMARIZE(F1,SUMX(C1)),FILTER(query1,CHOOSECOLS(query1,2)=1339724852))
Formula2: LET(query1,SUMMARIZE(F2:F8,SUMX(C2:C8)),FILTER(query1,CHOOSECOLS(query1,2)=1339724852))
Level: hard
Question: How many populations have a capital of Hong Kong?
Formula: SUMIFS(C1,F1,"Hong Kong")
Formula2: SUMIFS(C2:C8,F2:F8,"Hong Kong")
Level: easy