Table:
0
A
B
C
D
E
1
Perpetrator
Location
Country
Killed
Injured
2
Bryant, Martin John , 28
Port Arthur , TAS
Australia
35
23
3
Unknown
Siquijor
Philippines
32
0.0 ?
4
Wirjo , 42
Banjarsari
Indonesia
20
12
5
Formentera, Arsenio
Palompon
Philippines
17
0.0 ?
6
Hodeng
Kampong Tankulu
Indonesia
16
01 1
7
Gz
Gz
Iz
100.9
100.9
8
Salazar, Domingo , 42
San Nicolas
Philippines
16
01 1
9
Unknown
Ternate
Indonesia
15
04 4
10
Basobas, Florentino
Quezon, Palawan
Philippines
15
04 4
11
Antakin
Kaningow
Malaysia
15
03 3
12
Pusok Anak Ngaik, 28
Kampong Bukit Merah
Malaysia
14
04 4
13
Sz
Qz
Nz
100.9
100.9
14
Unknown
Borneo
Indonesia
14
0.0 ?
15
Unknown
Gondang
Indonesia
13
03 3
16
Gray, David Malcolm , 33
Aramoana
New Zealand
13
03 3
17
Kalinga Boli
Tagan
Philippines
13
0.0 ?
18
Two unknown Men
Zamboanga
Philippines
12
14

Questions and formulas:
Question: How many kills did basobas, florentino have?
Formula: SUMIFS(D1,A1,"basobas, florentino")
Formula2: SUMIFS(D2:D18,A2:A18,"basobas, florentino")
Level: easy
Question: What is the average number of people killed with a Perpetrator of wirjo, 42?
Formula: AVERAGEIFS(D1,A1,"wirjo, 42")
Formula2: AVERAGEIFS(D2:D18,A2:A18,"wirjo, 42")
Level: easy
Question: How many are injured in Borneo?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="borneo"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E18,B2:B18="borneo"),5))
Level: medium