Table:
0
A
B
C
D
E
1
National team
Club
Year
Apps
Goals
2
England
Arsenal
2010
1
0
3
England
Arsenal
2011
4
0
4
England
Arsenal
2012
1
0
5
England
Arsenal
2013
6
0
6
Total
Total
Total
12
0

Questions and formulas:
Question: Which Goals have Apps smaller than 1?
Formula: SUM(FILTER(E1, D1<1))
Formula2: SUM(FILTER(E2:E6, D2:D6<1))
Level: easy
Question: Which National team has a Year of total?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="total"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,C2:C6="total"),1))
Level: medium
Question: How many Goals have a National team of england, and Apps smaller than 6, and a Year of 2012?
Formula: SUM(FILTER(E1, (A1="england")*(D1<6)*(C1="2012")))
Formula2: SUM(FILTER(E2:E6, (A2:A6="england")*(D2:D6<6)*(C2:C6="2012")))
Level: easy
Question: Which National team has a Club of arsenal, and Apps smaller than 4, and a Year of 2010?
Formula: LET(query1,LET(query1,FILTER(A1:E1,(B1="arsenal")*(C1="2010")),SUMMARIZE(CHOOSECOLS(query1,1),SUMX(CHOOSECOLS(query1,4)))),FILTER(query1,CHOOSECOLS(query1,2)<4))
Formula2: LET(query1,LET(query1,FILTER(A2:E6,(B2:B6="arsenal")*(C2:C6="2010")),SUMMARIZE(CHOOSECOLS(query1,1),SUMX(CHOOSECOLS(query1,4)))),FILTER(query1,CHOOSECOLS(query1,2)<4))
Level: hard