Table:
0
A
B
C
D
E
1
Class
Quantity
Manufacturer
Motor
Seats
2
BS 1897
16
Falkenried
UEG
16
3
BS 1910
6
Unknown
AEG
16
4
BS 1913
8
Nordwaggon
AEG
24
5
BS 1915
10
P. Herbrand & Cie
AEG
18
6
BS 1921
19
Nordwaggon
AEG
24
7
KES 1909
1
P. Herbrand & Cie
Siemens
24
8
KSS 1913
1
Falkenried
Siemens
16
9
BS 1947
10
Strømmen
Norsk Elektrisk og Brown Boveri
23

Questions and formulas:
Question: Which motor's quantity was more than 8, and a class of bs 1915?
Formula: LET(query1,LET(query1,FILTER(A1:E1,A1="bs 1915"),SUMMARIZE(CHOOSECOLS(query1,4),SUMX(CHOOSECOLS(query1,2)))),FILTER(query1,CHOOSECOLS(query1,2)>8))
Formula2: LET(query1,LET(query1,FILTER(A2:E9,A2:A9="bs 1915"),SUMMARIZE(CHOOSECOLS(query1,4),SUMX(CHOOSECOLS(query1,2)))),FILTER(query1,CHOOSECOLS(query1,2)>8))
Level: hard
Question: Which motor's class was bs 1910?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="bs 1910"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,A2:A9="bs 1910"),4))
Level: medium
Question: What is the quantity when the seats number was 16 and the class was kss 1913?
Formula: SUM(FILTER(B1, (E1=16)*(A1="kss 1913")))
Formula2: SUM(FILTER(B2:B9, (E2:E9=16)*(A2:A9="kss 1913")))
Level: easy