Table:
0
A
B
C
D
E
1
Period
Civilians
Security forces
Insurgents
Total per period
2
1996
N/A
N/A
N/A
156
3
1997
202
44
102
348
4
1998
118
42
110
270
5
1999
115
36
212
363
6
2000
N/A
N/A
N/A
50
7
2001
N/A
N/A
N/A
564

Questions and formulas:
Question: What are the civilian total when the security force total is 36?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1=36),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,C2:C7=36),2))
Level: medium
Question: What are the security forces when the civilians are 202?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1=202),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E7,B2:B7=202),3))
Level: medium
Question: How many figures are named for security forces in 1998?
Formula: SUM(FILTER(C1, A1=1998))
Formula2: SUM(FILTER(C2:C7, A2:A7=1998))
Level: easy
Question: How many insurgents are there when the total per period is 156?
Formula: LET(query1,SUMMARIZE(D1,SUMX(E1)),FILTER(query1,CHOOSECOLS(query1,2)=156))
Formula2: LET(query1,SUMMARIZE(D2:D7,SUMX(E2:E7)),FILTER(query1,CHOOSECOLS(query1,2)=156))
Level: hard