Table:
0
A
B
C
D
E
F
1
people id
name
height
weight
birth date
birth place
2
1
Jack Campbell
182
80
1-Jan-92
Port Huron, Michigan
3
2
Ty Conklin
192
90
30-Mar-76
Anchorage, Alaska
4
3
Al Montoya
195
100
13-Feb-85
Glenview, Illinois
5
4
Mark Fayne
215
102
5-May-87
Nashua, New Hampshire
6
5
Cam Fowler
196
89
5-Dec-91
Farmington Hills, Michigan
7
6
Jake Gardiner
205
92
4-Jul-90
Minnetonka, Minnesota

Questions and formulas:
Question: What are the birthdays of people in ascending order of height?
Formula: SORTBY(E1,C1,1)
Formula2: SORTBY(E2:E7,C2:C7,1)
Level: easy
Question: List each birth place along with the number of people from there.
Formula: SUMMARIZE(F1,SUMX(A1))
Formula2: SUMMARIZE(F2:F7,SUMX(A2:A7))
Level: easy
Question: What are the birth places that are shared by at least two people?
Formula: LET(query1,SUMMARIZE(F1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,3)>=2))
Formula2: LET(query1,SUMMARIZE(F2:F7,SUMX(A2:A7)),FILTER(query1,CHOOSECOLS(query1,3)>=2))
Level: hard
Question: List the height and weight of people in descending order of height.
Formula: SORTBY(CHOOSE({1,2},C1,D1),C1,-1)
Formula2: SORTBY(CHOOSE({1,2},C2:C7,D2:D7),C2:C7,-1)
Level: easy
Question: How many distinct birth places are there?
Formula: ROWS(UNIQUE(F1))
Formula2: ROWS(UNIQUE(F2:F7))
Level: easy
Question: Total number of birth places.
Formula: ROWS(UNIQUE(F1))
Formula2: ROWS(UNIQUE(F2:F7))
Level: easy
Question: How many people were born in each place? 
Formula: SUMMARIZE(F1,SUMX(A1))
Formula2: SUMMARIZE(F2:F7,SUMX(A2:A7))
Level: easy
Question: Places where at least 2 people were born.
Formula: LET(query1,SUMMARIZE(F1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,3)>=2))
Formula2: LET(query1,SUMMARIZE(F2:F7,SUMX(A2:A7)),FILTER(query1,CHOOSECOLS(query1,3)>=2))
Level: hard
Question: How many people from different birth places?
Formula: SUMMARIZE(F1,DCOUNTX(A1))
Formula2: SUMMARIZE(F2:F7,DCOUNTX(A2:A7))
Level: easy
Question: The places where at least 2 people were born.
Formula: LET(query1,SUMMARIZE(F1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,3)>=2))
Formula2: LET(query1,SUMMARIZE(F2:F7,SUMX(A2:A7)),FILTER(query1,CHOOSECOLS(query1,3)>=2))
Level: hard
Question: the number of birth places.
Formula: ROWS(UNIQUE(F1))
Formula2: ROWS(UNIQUE(F2:F7))
Level: easy