Table:
0
A
B
C
D
E
F
1
Model
Build date
Total produced
Wheel arrangement
Prime mover
Power output
2
C-424
1963–1967
92
B-B
16-251B
hp (kW)
3
M-420
1973–1977
92
B-B
12-251C
hp (kW)
4
M-420B
1975
8
B-B
12-251C
hp (kW)
5
M-420R
1974–1975
5
B-B
12-251C
hp (kW)
6
M-420TR
1972
2
B-B
12-251C
hp (kW)
7
M-420TR
1975
15
B-B
12-251C
hp (kW)
8
M-424
1980
19
B-B
16-251B
hp (kW)

Questions and formulas:
Question: What is the average total produced when the prime mover is 12-251c?
Formula: AVERAGEIFS(C1,E1,"12-251c")
Formula2: AVERAGEIFS(C2:C8,E2:E8,"12-251c")
Level: easy
Question: What is the build date when total produced is 2?
Formula: LET(query1,SUMMARIZE(B1,SUMX(C1)),FILTER(query1,CHOOSECOLS(query1,2)=2))
Formula2: LET(query1,SUMMARIZE(B2:B8,SUMX(C2:C8)),FILTER(query1,CHOOSECOLS(query1,2)=2))
Level: hard
Question: What is the smallest total produced with a model of M-420?
Formula: MINIFS(C1,A1,"m-420")
Formula2: MINIFS(C2:C8,A2:A8,"m-420")
Level: easy
Question: What is the prime mover for a build date in 1975?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1=1975),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F8,B2:B8=1975),5))
Level: medium
Question: What model has a total produced more than 5 and a prime move of 12-251c?
Formula: LET(query1,LET(query1,FILTER(A1:F1,E1="12-251c"),SUMMARIZE(CHOOSECOLS(query1,1),SUMX(CHOOSECOLS(query1,3)))),FILTER(query1,CHOOSECOLS(query1,2)>5))
Formula2: LET(query1,LET(query1,FILTER(A2:F8,E2:E8="12-251c"),SUMMARIZE(CHOOSECOLS(query1,1),SUMX(CHOOSECOLS(query1,3)))),FILTER(query1,CHOOSECOLS(query1,2)>5))
Level: hard