Table:
0
A
B
C
D
E
1
Year started
Number of cars
Current car
Car #
Website
2
2011
2
Ilanga I.I
7
URL
3
2010
2
Parhelion
3
URL
4
2008
1
Sunna
15
URL
5
2008
1
Sanyo Iritron
12
URL
6
2009
1
tba
1
URL
7
2012
1
son-e-wa
23
URL

Questions and formulas:
Question: HOW MANY CARS HAD A CAR # SMALLER THAN 7 AND STARTED ON 2010?
Formula: SUM(FILTER(B1, (D1<7)*(A1=2010)))
Formula2: SUM(FILTER(B2:B7, (D2:D7<7)*(A2:A7=2010)))
Level: easy
Question: WHAT WAS THE LOWEST CAR # WITH SON-E-WA, AND 2012 START YEAR?
Formula: MIN(FILTER(D1, (C1="son-e-wa")*(A1<2012)))
Formula2: MIN(FILTER(D2:D7, (C2:C7="son-e-wa")*(A2:A7<2012)))
Level: easy
Question: WHAT IS THE HIGHEST # OF CARS WITH A START YEAR LESS THAN 2012, TBA CURRENT CAR, AND MORE THAN 1 CAR?
Formula: MAX(FILTER(B1, (A1<2012)*(C1="tba")*(D1>1)))
Formula2: MAX(FILTER(B2:B7, (A2:A7<2012)*(C2:C7="tba")*(D2:D7>1)))
Level: easy