Table:
0
A
B
C
D
E
1
Position
Race Number
Driver
Country
Laps
2
1.
10
Armin Hahne
D
11
3
2.
7
Cor Euser
NL
11
4
3.
6
Win Percy
GB
11
5
4.
2
Will Hoy
GB
11
6
5.
4
Bob Wollek
F
11
7
6.
9
David Brabham
AUS
11
8
7.
12
David Leslie
GB
11
9
8.
16
Ian Flux
GB
11
10
9.
8
Pierre Dieudonné
B
11
11
10.
6
Jim Richards
NZ
11
12
11.
17
Jeff Allam
GB
11
13
12.
3
Andy Evans
USA
11
14
13.
5
Tiff Needell
GB
11
15
14.
11
Derek Warwick
GB
8
16
DNF
14
Thierry Tassin
B
4
17
DNF
15
John Watson
GB
3

Questions and formulas:
Question: What is the average number of laps when the country was NL and the race number was smaller than 8?
Formula: AVERAGE(FILTER(E1, (B1<8)*(D1="nl")))
Formula2: AVERAGE(FILTER(E2:E17, (B2:B17<8)*(D2:D17="nl")))
Level: easy