Table:
0
A
B
C
D
E
F
1
Name
City
Height (m)
Height (ft)
Floors
Years as tallest
2
Commerzbank Tower
Frankfurt
259
850
56
1997–present
3
Messeturm
Frankfurt
257
843
55
1990–1997
4
Silberturm
Frankfurt
166
545
32
1978–1990
5
Westend Gate
Frankfurt
159
522
47
1976–1978
6
Colonia-Hochhaus
Cologne
147
482
42
1973–1976
7
City-Hochhaus Leipzig
Leipzig
143
468
36
1972–1973
8
Bayer-Hochhaus
Leverkusen
122
400
29
1963–1972
9
Friedrich-Engelhorn-Hochhaus
Ludwigshafen
102
335
28
1957–1963

Questions and formulas:
Question: What is the name of the building that was the tallest from 1990–1997 in Frankfurt?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(B1="frankfurt")*(F1="1990–1997")),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F9,(B2:B9="frankfurt")*(F2:F9="1990–1997")),1))
Level: medium
Question: For a height less than 122 meters, what is the greatest height in feet?
Formula: MAX(FILTER(D1, C1<122))
Formula2: MAX(FILTER(D2:D9, C2:C9<122))
Level: easy
Question: How high was the highest building in feet in the city of cologne?
Formula: MAXIFS(D1,B1,"cologne")
Formula2: MAXIFS(D2:D9,B2:B9,"cologne")
Level: easy
Question: What is the smallest height (ft) of a building in Frankfurt with a height (m) of 257 and less than 55 floors?
Formula: MIN(FILTER(D1, (B1="frankfurt")*(C1=257)*(E1<55)))
Formula2: MIN(FILTER(D2:D9, (B2:B9="frankfurt")*(C2:C9=257)*(E2:E9<55)))
Level: easy
Question: What is the height in meters for a building in Frankfurt that is 850 feet tall?
Formula: SUM(FILTER(C1, (B1="frankfurt")*(D1=850)))
Formula2: SUM(FILTER(C2:C9, (B2:B9="frankfurt")*(D2:D9=850)))
Level: easy