Table:
0
A
B
C
D
E
F
1
Eruptions
Country
Location
Year
Volcanic Explosivity Index
Fatalities
2
Mount Vesuvius
Italy
Mediterranean
79
5
02001 >2,000
3
Hatepe (Taupo)
New Zealand
Pacific Ring of Fire
186
7
00000 ?
4
Baekdu
China / North Korea
Pacific Ring of Fire
969
6–7
00000 ?
5
Kuwae
Vanuatu
Pacific Ring of Fire
1452
6
00000 ?
6
Huaynaputina
Peru
Pacific Ring of Fire
1600
6
01400 ≈1,400
7
Tambora
Indonesia
Pacific Ring of Fire
1815
7
71001 >71,000
8
Krakatoa
Indonesia
Pacific Ring of Fire
1883
6
36000 36,600
9
Santa María
Guatemala
Pacific Ring of Fire
1902
6
07001 7,000–13,000
10
Novarupta
USA, Alaska
Pacific Ring of Fire
1912
6
00002 2
11
Mt. St. Helens
USA, Washington
Pacific Ring of Fire
1980
5
00057 57
12
El Chichón
Mexico
Pacific Ring of Fire
1982
4–5
02001 >2,000
13
Nevado del Ruiz
Colombia
Pacific Ring of Fire
1985
3
23000 23,000
14
Pinatubo
Philippines
Pacific Ring of Fire
1991
6
01202 1,202

Questions and formulas:
Question: Which Eruptions have a Location of pacific ring of fire, and a Volcanic Explosivity Index of 6, and a Country of peru?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(C1="pacific ring of fire")*(E1=6)*(B1="peru")),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F14,(C2:C14="pacific ring of fire")*(E2:E14=6)*(B2:B14="peru")),1))
Level: medium
Question: How many fatalities does Italy have?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1="italy"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F14,B2:B14="italy"),6))
Level: medium
Question: How many years have a Location of pacific ring of fire, and Eruptions of pinatubo?
Formula: SUM(FILTER(D1, (C1="pacific ring of fire")*(A1="pinatubo")))
Formula2: SUM(FILTER(D2:D14, (C2:C14="pacific ring of fire")*(A2:A14="pinatubo")))
Level: easy