Table:
0
A
B
C
D
E
F
G
1
Built
Number
Type
SLM Number
Wheel arrangement
Location
Notes
2
1895
1
Mountain Railway Rack Steam Locomotive
923
0-4-2 T
Snowdon Mountain Railway
“L.A.D.A.S”
3
1895
2
Mountain Railway Rack Steam Locomotive
924
0-4-2 T
Snowdon Mountain Railway
“Enid”
4
1895
3
Mountain Railway Rack Steam Locomotive
925
0-4-2 T
Snowdon Mountain Railway
“Wyddfa”
5
1896
4
Mountain Railway Rack Steam Locomotive
988
0-4-2 T
Snowdon Mountain Railway
“Snowdon”
6
1896
5
Mountain Railway Rack Steam Locomotive
989
0-4-2 T
Snowdon Mountain Railway
“Moel Siabod”
7
1922
6
Mountain Railway Rack Steam Locomotive
2838
0-4-2 T
Snowdon Mountain Railway
“Padarn”
8
1923
7
Mountain Railway Rack Steam Locomotive
2869
0-4-2 T
Snowdon Mountain Railway
“Ralph”
9
1923
8
Mountain Railway Rack Steam Locomotive
2870
0-4-2 T
Snowdon Mountain Railway
“Eryri”

Questions and formulas:
Question: What locomotive built after 1895 has the highest SLM number?
Formula: MAX(FILTER(D1, A1>1895))
Formula2: MAX(FILTER(D2:D9, A2:A9>1895))
Level: easy
Question: Which type of locomotive was built in 1923?
Formula: LET(query1,SUMMARIZE(C1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,2)=1923))
Formula2: LET(query1,SUMMARIZE(C2:C9,SUMX(A2:A9)),FILTER(query1,CHOOSECOLS(query1,2)=1923))
Level: hard
Question: What is the first locomotive that has a SLM number lower than 924?
Formula: SUM(FILTER(B1, D1<924))
Formula2: SUM(FILTER(B2:B9, D2:D9<924))
Level: easy