Table:
0
A
B
C
D
E
F
1
Year
RR class
RR Nos.
Builder
Builder Nos.
GWR/BR Nos.
2
1910
A
10–14
Robert Stephenson & Co.
3387–3391
52–56
3
1910
A
115–119
Robert Stephenson & Co.
3392–3396
71–75
4
1911
A
15, 18–22
Hudswell Clarke
946–951
57–62
5
1914
A1
23–25
Hudswell Clarke
1063–1065
63–65
6
1916
A1
26–27
Hudswell Clarke
1119–1120
66–67
7
1918
A1
28–30
Robert Stephenson & Co.
3660–3662
68–70

Questions and formulas:
Question: Name the builder numbers with RR class of a1 and year less than 1916
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(B1="a1")*(A1<1916)),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,(B2:B7="a1")*(A2:A7<1916)),5))
Level: medium
Question: Name the RR numbers of hudswell clarke and years before 1914
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(D1="hudswell clarke")*(A1<1914)),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F7,(D2:D7="hudswell clarke")*(A2:A7<1914)),3))
Level: medium