Table:
0
A
B
C
D
E
F
G
H
I
J
1
school id
school
location
enrollment
founded
denomination
boys or girls
day or boarding
year entered competition
school colors
2
1
St Aloysius' College
Milsons Point
1200
1879-01-01
Catholic
Boys
Day
1/1/1929
Royal Blue and Gold
3
2
Barker College
Hornsby
2300
1890-01-01
Anglican
Boys only to Yr 9 Co-ed Year 10 to 12
Day & Boarding
1/1/1929
Red & Blue
4
3
Cranbrook School
Bellevue Hill
1000
1/1/1918
Anglican
Boys
Day & Boarding
1/1/1929
Red, White & Blue
5
4
Knox Grammar School
Wahroonga
1850
1/1/1924
Uniting Church
Boys
Day & Boarding
1/1/1929
Black & Blue
6
5
Trinity Grammar School
Summer Hill
2200
1/1/1913
Anglican
Boys
Day & Boarding
1/1/1929
Green and White
7
6
Waverley College
Waverley
1430
1/1/1903
Catholic
Boys
Day
1/1/1944
Royal Blue and Gold

Questions and formulas:
Question: How many schools are there?
Formula: ROWS(UNIQUE(B1))
Formula2: ROWS(UNIQUE(B2:B7))
Level: easy
Question: Count the number of schools.
Formula: ROWS(UNIQUE(B1))
Formula2: ROWS(UNIQUE(B2:B7))
Level: easy
Question: List the locations of schools in ascending order of enrollment.
Formula: SORTBY(C1,D1,1)
Formula2: SORTBY(C2:C7,D2:D7,1)
Level: easy
Question: What is the list of school locations sorted in ascending order of enrollment?
Formula: SORT(SUMMARIZE(HSTACK(B1,C1),SUMX(D1)), 3, 1)
Formula2: SORT(SUMMARIZE(HSTACK(B2:B7,C2:C7),SUMX(D2:D7)), 3, 1)
Level: hard
Question: List the locations of schools in descending order of founded year.
Formula: SORTBY(C1,E1,-1)
Formula2: SORTBY(C2:C7,E2:E7,-1)
Level: easy
Question: What is the average enrollment of schools?
Formula: AVERAGE(D1)
Formula2: AVERAGE(D2:D7)
Level: easy
Question: Please show different denominations and the corresponding number of schools.
Formula: SUMMARIZE(F1,DCOUNTX(B1))
Formula2: SUMMARIZE(F2:F7,DCOUNTX(B2:B7))
Level: easy
Question: For each denomination, return the denomination and the count of schools with that denomination.
Formula: SUMMARIZE(F1,DCOUNTX(B1))
Formula2: SUMMARIZE(F2:F7,DCOUNTX(B2:B7))
Level: easy
Question: Order denominations in descending order of the count of schools
Formula: SORT(SUMMARIZE(F1,DCOUNTX(B1)), 2, -1)
Formula2: SORT(SUMMARIZE(F2:F7,DCOUNTX(B2:B7)), 2, -1)
Level: medium
Question: List the school color of the school that has the largest enrollment.
Formula: LET(a,SORTBY(J1,D1,-1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Formula2: LET(a,SORTBY(J2:J7,D2:D7,-1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Level: hard
Question: What is the school color of the school with the largest enrollment?
Formula: LET(a,SORTBY(J1,D1,-1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Formula2: LET(a,SORTBY(J2:J7,D2:D7,-1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Level: hard
Question: Show the denomination shared by more than one school.
Formula: LET(query1,SUMMARIZE(F1,DCOUNTX(B1)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Formula2: LET(query1,SUMMARIZE(F2:F7,DCOUNTX(B2:B7)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Level: hard
Question: What are the denomination more than one school have?
Formula: LET(query1,SUMMARIZE(F1,DCOUNTX(B1)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Formula2: LET(query1,SUMMARIZE(F2:F7,DCOUNTX(B2:B7)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Level: hard
Question: How many schools for each denomination?
Formula: SUMMARIZE(F1,DCOUNTX(B1))
Formula2: SUMMARIZE(F2:F7,DCOUNTX(B2:B7))
Level: easy
Question: How many schools under each denomination?
Formula: SUMMARIZE(F1,DCOUNTX(B1))
Formula2: SUMMARIZE(F2:F7,DCOUNTX(B2:B7))
Level: easy
Question: Descending order of numbers of schools for each denomination.
Formula: SORT(SUMMARIZE(F1,DCOUNTX(B1)), 2, -1)
Formula2: SORT(SUMMARIZE(F2:F7,DCOUNTX(B2:B7)), 2, -1)
Level: medium
Question: Descending order of different denominations' school counts.
Formula: SORT(SUMMARIZE(F1,DCOUNTX(B1)), 2, -1)
Formula2: SORT(SUMMARIZE(F2:F7,DCOUNTX(B2:B7)), 2, -1)
Level: medium
Question: What colors does the school with the highest enrollment have?
Formula: LET(a,HSTACK(J1,B1),b,B1,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(B1,SUMX(D1)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(J2:J7,B2:B7),b,B2:B7,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(B2:B7,SUMX(D2:D7)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard
Question: Name and color of the school which have enrolled most students.
Formula: LET(a,HSTACK(B1,J1),b,B1,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(B1,SUMX(D1)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(B2:B7,J2:J7),b,B2:B7,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(B2:B7,SUMX(D2:D7)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard
Question: Which denominations are shared by more than 1 school?
Formula: LET(query1,SUMMARIZE(F1,DCOUNTX(B1)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Formula2: LET(query1,SUMMARIZE(F2:F7,DCOUNTX(B2:B7)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Level: hard
Question: Denominations with more than one school 
Formula: LET(query1,SUMMARIZE(F1,DCOUNTX(B1)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Formula2: LET(query1,SUMMARIZE(F2:F7,DCOUNTX(B2:B7)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Level: hard
Question: total number of schools 
Formula: ROWS(UNIQUE(B1))
Formula2: ROWS(UNIQUE(B2:B7))
Level: easy
Question: How many schools?
Formula: ROWS(UNIQUE(B1))
Formula2: ROWS(UNIQUE(B2:B7))
Level: easy
Question: What are school's locations and founding dates from latest to earliest?
Formula: SORT(UNIQUE(HSTACK(C1,B1,E1)), 3, -1)
Formula2: SORT(UNIQUE(HSTACK(C2:C7,B2:B7,E2:E7)), 3, -1)
Level: medium
Question: the number of schools
Formula: ROWS(UNIQUE(B1))
Formula2: ROWS(UNIQUE(B2:B7))
Level: easy
Question: How many schools in total?
Formula: ROWS(UNIQUE(B1))
Formula2: ROWS(UNIQUE(B2:B7))
Level: easy
Question: How many schools?
Formula: ROWS(UNIQUE(B1))
Formula2: ROWS(UNIQUE(B2:B7))
Level: easy
Question: What colors does the school with the most enrollment have?
Formula: LET(a,HSTACK(J1,B1),b,B1,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(B1,SUMX(D1)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(J2:J7,B2:B7),b,B2:B7,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(B2:B7,SUMX(D2:D7)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard
Question: What is the denomination shared by more than 1 school?
Formula: LET(query1,SUMMARIZE(F1,DCOUNTX(B1)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Formula2: LET(query1,SUMMARIZE(F2:F7,DCOUNTX(B2:B7)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Level: hard
Question: What is the location and founded date of school from latest to earliest?
Formula: SORT(UNIQUE(HSTACK(C1,B1,E1)), 3, -1)
Formula2: SORT(UNIQUE(HSTACK(C2:C7,B2:B7,E2:E7)), 3, -1)
Level: medium
Question: Denominations shared by more than 1 school.
Formula: LET(query1,SUMMARIZE(F1,DCOUNTX(B1)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Formula2: LET(query1,SUMMARIZE(F2:F7,DCOUNTX(B2:B7)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Level: hard