Table:
0
A
B
C
D
E
1
Year
Álbum
Charts
Sales
Certification
2
1990
Xuxa 1
No. 1 Latin Charts
2,500,000
1x Diamond
3
1991
Xuxa 2
No. 1 Latin Charts
1,650,000
2x Platinum
4
1992
Xuxa 3
No. 7 Latin Charts
750,000
2x Platinum
5
1993
Todos Sús Exitos
No. 1 Latin Charts
1,500,000
1x Diamond
6
1994
El Pequeño Mundo
No. 49 Latin
300,000
1x Platinum
7
1996
Xuxa Dance
No. 10 Latin Charts
300,000
1x Platinum
8
1999
El Mundo és de los Dos
No. 40 Latin Charts
150,000
1x Gold
9
2005
Solamente para Bajitos
–
200,000
1x Gold

Questions and formulas:
Question: What was the average year that Xuxa 3 earned the certification 2x platinum, and that the sales were higher than 750,000?
Formula: AVERAGE(FILTER(A1, (E1="2x platinum")*(B1="xuxa 3")*(D1>750000)))
Formula2: AVERAGE(FILTER(A2:A9, (E2:E9="2x platinum")*(B2:B9="xuxa 3")*(D2:D9>750000)))
Level: easy
Question: What were the number of sales before 1991?
Formula: SUM(FILTER(D1, A1<1991))
Formula2: SUM(FILTER(D2:D9, A2:A9<1991))
Level: easy
Question: What álbum was in the year 1996?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1=1996),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,A2:A9=1996),2))
Level: medium