Table:
0
A
B
C
D
E
1
Lane
Name
Nationality
Reaction
Time
2
6
Dawn Harper
United States
0.193
12.54
3
3
Sally McLellan
Australia
0.138
12.64
4
8
Priscilla Lopes-Schliep
Canada
0.174
12.64
5
7
Damu Cherry
United States
0.239
12.65
6
5
Delloreen Ennis-London
Jamaica
0.151
12.65
7
9
Brigitte Foster-Hylton
Jamaica
0.167
12.66
8
4
LoLo Jones
United States
0.185
12.72
9
2
Sarah Claxton
Great Britain
0.163
12.94

Questions and formulas:
Question: How many lanes does Australia have with a reaction smaller than 0.138?
Formula: SUM(FILTER(A1, (C1="australia")*(D1<0.138)))
Formula2: SUM(FILTER(A2:A9, (C2:C9="australia")*(D2:D9<0.138)))
Level: easy
Question: Who had a reaction larger than 0.17400000000000002 and a lane larger than 6?
Formula: LET(query1,SUMMARIZE(B1,SUMX(D1),SUMX(A1)),FILTER(query1,(CHOOSECOLS(query1,2)>0.17400000000000002)*(CHOOSECOLS(query1,3)>6)))
Formula2: LET(query1,SUMMARIZE(B2:B9,SUMX(D2:D9),SUMX(A2:A9)),FILTER(query1,(CHOOSECOLS(query1,2)>0.17400000000000002)*(CHOOSECOLS(query1,3)>6)))
Level: hard