Table:
0
A
B
C
D
E
F
G
1
Event
Circuit
Date
Pole Position
Race 1 Winner
Race 2 Winner
Race 3 Winner
2
1
Albert Park Street Circuit
28–29 March
Nick Percat
Nick Percat
Nick Percat
no third race
3
2
Winton Motor Raceway
2–3 May
Nick Percat
Nick Percat
Nick Percat
Nick Percat
4
3
Symmons Plains Raceway
31 May
Chaz Mostert
Nick Percat
Nick Percat
Richie Stanaway
5
4
Hidden Valley Raceway
19 June
Nick Percat
Nick Percat
Nick Percat
Nick Percat
6
5
Sandown Raceway
2 August
Chaz Mostert
Mitch Evans
Scott Pye
Scott Pye
7
6
Queensland Raceway
23 August
Mitch Evans
Tim Macrow
Mitch Evans
Mitch Evans
8
7
Phillip Island Grand Prix Circuit
13 September
Mitch Evans
Nick Percat
Nick Percat
Chaz Mostert

Questions and formulas:
Question: How many race 3 winners were there when Mitch Evans won race 2?
Formula: ROWS(UNIQUE(FILTER(G1, F1="Mitch Evans")))
Formula2: ROWS(UNIQUE(FILTER(G2:G8, F2:F8="Mitch Evans")))
Level: medium
Question: What date was the race at the Symmons Plains Raceway?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,B1="Symmons Plains Raceway"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G8,B2:B8="Symmons Plains Raceway"),3))
Level: medium
Question: Who was the race 1 winner at the race held at Winton Motor Raceway?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,B1="Winton Motor Raceway"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G8,B2:B8="Winton Motor Raceway"),5))
Level: medium
Question: Who was the race 1 winner of the race at Hidden Valley Raceway?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,B1="Hidden Valley Raceway"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G8,B2:B8="Hidden Valley Raceway"),5))
Level: medium