Table:
0
A
B
C
D
E
F
1
Rank
City 1
City 2
2012 Passengers (in millions)
2011 Passengers (in millions)
Distance
2
1
Seoul
Jeju
10.156
9.9
450km
3
2
Tokyo
Sapporo
8.211
7.5
819km
4
3
São Paulo
Rio de Janeiro
7.716
7.6+
366km
5
4
Beijing
Shanghai
7.246
6.6+
1075km
6
5
Sydney
Melbourne
6.943
7.0+
706km
7
6
Tokyo
Osaka
6.744
7.5
405km
8
7
Tokyo
Fukuoka
6.640
6.6+
883km
9
8
Hong Kong
Taipei
5.513
6.2+
780km
10
9
Tokyo
Okinawa
4.584
4.1
1554km
11
10
Johannesburg
Cape Town
4.407
4.5
1271km

Questions and formulas:
Question: What is the number of 2011 passengers in millions that have traveled a distance of 1271km?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1="1271km"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F11,F2:F11="1271km"),5))
Level: medium
Question: What is the number of 2012 passengers in millions that have traveled a distance of 1075km?
Formula: SUMIFS(D1,F1,"1075km")
Formula2: SUMIFS(D2:D11,F2:F11,"1075km")
Level: easy
Question: What is the City 1 that has less than 8.211 million passengers and traveled 1075km in distance?
Formula: LET(query1,LET(query1,FILTER(A1:F1,F1="1075km"),SUMMARIZE(CHOOSECOLS(query1,2),SUMX(CHOOSECOLS(query1,4)))),FILTER(query1,CHOOSECOLS(query1,2)<8.211))
Formula2: LET(query1,LET(query1,FILTER(A2:F11,F2:F11="1075km"),SUMMARIZE(CHOOSECOLS(query1,2),SUMX(CHOOSECOLS(query1,4)))),FILTER(query1,CHOOSECOLS(query1,2)<8.211))
Level: hard