Table:
0
A
B
C
D
E
F
1
Call sign
Frequency MHz
City of license
ERP W
Class
FCC info
2
W294AJ
106.7
Charlottesville, Virginia
21
D
FCC
3
W236AD
95.1
Lawrenceville, Virginia
25
D
FCC
4
W246BZ
97.1
Crewe, Virginia
38
D
FCC
5
W254AH
98.7
Farmville, Virginia
27
D
FCC
6
W272CC
102.3
Smithfield, Virginia
10
D
FCC
7
W273AA
102.5
Blacksburg, Virginia
10
D
FCC
8
W274AB
102.7
Petersburg, Virginia
30
D
FCC
9
W291AJ
106.1
Waverly, Virginia
27
D
FCC
10
W292CU
106.3
Christiansburg, Virginia
10
D
FCC
11
W295AI
106.9
Marion, Virginia
10
D
FCC

Questions and formulas:
Question: what is the city of license for the station with the frequency mhz less than 102.3 abd erp w of 25?
Formula: LET(query1,SUMMARIZE(C1,SUMX(B1),SUMX(D1)),FILTER(query1,(CHOOSECOLS(query1,2)<102.3)*(CHOOSECOLS(query1,3)=25)))
Formula2: LET(query1,SUMMARIZE(C2:C11,SUMX(B2:B11),SUMX(D2:D11)),FILTER(query1,(CHOOSECOLS(query1,2)<102.3)*(CHOOSECOLS(query1,3)=25)))
Level: hard
Question: \What is the class of the station with the call sign w254ah?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="w254ah"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F11,A2:A11="w254ah"),5))
Level: medium
Question: what is the class of the station with erp w more than 30?
Formula: LET(query1,SUMMARIZE(E1,SUMX(D1)),FILTER(query1,CHOOSECOLS(query1,2)>30))
Formula2: LET(query1,SUMMARIZE(E2:E11,SUMX(D2:D11)),FILTER(query1,CHOOSECOLS(query1,2)>30))
Level: hard
Question: what is the highest frequency mhz with the call sign w292cu?
Formula: MAXIFS(B1,A1,"w292cu")
Formula2: MAXIFS(B2:B11,A2:A11,"w292cu")
Level: easy