Table:
0
A
B
C
D
E
1
Class
Type
Introduced
Fleet Size
Numbers
2
Class 08
Shunter
1953
2
08925, 08934
3
Class 09
Shunter
1959
2
09002, 09009
4
Class 20
Diesel locomotive
1957-1968
9
20096, 107, 142, 189, 227 311, 314, 901, 905
5
Class 66
Diesel locomotive
2002
48
66701-733, 735-751
6
Class 73
Electro-diesel locomotive
1966
10
73119, 141, 204-209, 212-213
7
Class 92
Electric locomotive
1993
7
92020, 021, 032, 040, 044-046
8
Vanguard 0-6-0DH
Diesel locomotive
2011
2
DH50-1, DH50-2

Questions and formulas:
Question: What is the fleet size of the Vanguard 0-6-0dh class?
Formula: SUMIFS(D1,A1,"vanguard 0-6-0dh")
Formula2: SUMIFS(D2:D8,A2:A8,"vanguard 0-6-0dh")
Level: easy
Question: What is the year of introduction for the Electro-Diesel locomotive?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="electro-diesel locomotive"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,B2:B8="electro-diesel locomotive"),3))
Level: medium
Question: What is the average fleet size for the Shunter type introduced in 1959?
Formula: AVERAGE(FILTER(D1, (B1="shunter")*(C1=1959)))
Formula2: AVERAGE(FILTER(D2:D8, (B2:B8="shunter")*(C2:C8=1959)))
Level: easy
Question: What is the smallest fleet size with a type of shunter introduced in 1953?
Formula: MIN(FILTER(D1, (B1="shunter")*(C1=1953)))
Formula2: MIN(FILTER(D2:D8, (B2:B8="shunter")*(C2:C8=1953)))
Level: easy