Table:
0
A
B
C
D
E
1
Year
Main colour(s)
Additional colour(s)
Livery
Additional major sponsor(s)
2
1978
Yellow
Black
ATS Wheels
Ford, Champion, Air Press, Shell, Goodyear
3
1979
Yellow
Black, Red
ATS Wheels, Arawak, Hotel Freeport
Goodyear, Shell
4
1980
Yellow
Black, Red
ATS Wheels, Arawak, Hotel Freeport
Shell, Buler Quartz, Goodyear
5
1981
Yellow
White, Black
ATS Wheels
ABBA , Shell, Champion
6
1981
Yellow
White, Black
ATS Wheels
Copec, Tecfin, Liqui Moly, Shell, Champion
7
1983
Yellow
Black
ATS Wheels
Shell, Goodyear, Steinbock
8
1984
Yellow
Black
ATS Wheels
Marilena, Steinbock, Shell, Pirelli

Questions and formulas:
Question: What are the additional major sponsors which correspond to the additional color black and a year 1984?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(C1="black")*(A1=1984)),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E8,(C2:C8="black")*(A2:A8=1984)),5))
Level: medium
Question: What is the average year of entries with additional color black?
Formula: AVERAGEIFS(A1,C1,"black")
Formula2: AVERAGEIFS(A2:A8,C2:C8,"black")
Level: easy