Table:
0
A
B
C
1
pilot id
name
age
2
1
Prof. Zackery Collins
23
3
2
Katheryn Gorczany IV
20
4
3
Mr. Cristian Halvorson II
23
5
4
Ayana Spencer
25
6
5
Ellen Ledner III
31
7
6
Elisha Hickle V
37
8
7
Dr. Jade Bradtke V
26
9
8
Winnifred Boyle
30
10
9
Della Lindgren
29
11
10
Maxwell Graham
26
12
11
Blaise Muller
33
13
12
Baylee Steuber
30

Questions and formulas:
Question: What are the name of pilots aged 25 or older?
Formula: LET(query1,SUMMARIZE(HSTACK(A1,B1),SUMX(C1)),FILTER(query1,CHOOSECOLS(query1,3)>=25))
Formula2: LET(query1,SUMMARIZE(HSTACK(A2:A13,B2:B13),SUMX(C2:C13)),FILTER(query1,CHOOSECOLS(query1,3)>=25))
Level: hard
Question: what is the name of every pilot who is at least 25 years old?
Formula: LET(a,HSTACK(B1,A1),b,A1,c,CHOOSECOLS(LET(query1,SUMMARIZE(A1,SUMX(C1)),FILTER(query1,CHOOSECOLS(query1,2)>=25)),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(B2:B13,A2:A13),b,A2:A13,c,CHOOSECOLS(LET(query1,SUMMARIZE(A2:A13,SUMX(C2:C13)),FILTER(query1,CHOOSECOLS(query1,2)>=25)),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard
Question: List all pilot by their names in ascending alphabetical order.
Formula: SORT(UNIQUE(HSTACK(A1,B1)), 2, 1)
Formula2: SORT(UNIQUE(HSTACK(A2:A13,B2:B13)), 2, 1)
Level: medium
Question: What are the names of the pilots in alphabetical order?
Formula: SORT(UNIQUE(HSTACK(A1,B1)), 2, 1)
Formula2: SORT(UNIQUE(HSTACK(A2:A13,B2:B13)), 2, 1)
Level: medium
Question: List names of all pilot aged 30 or younger in descending alphabetical order.
Formula: SORT(LET(query1,SUMMARIZE(HSTACK(A1,B1),SUMX(C1)),FILTER(query1,CHOOSECOLS(query1,3)<=30)), 2, 1)
Formula2: SORT(LET(query1,SUMMARIZE(HSTACK(A2:A13,B2:B13),SUMX(C2:C13)),FILTER(query1,CHOOSECOLS(query1,3)<=30)), 2, 1)
Level: hard
Question: List names of all pilot in descending order of age.
Formula: SORT(SUMMARIZE(HSTACK(B1,A1),SUMX(C1)), 3, -1)
Formula2: SORT(SUMMARIZE(HSTACK(B2:B13,A2:A13),SUMX(C2:C13)), 3, -1)
Level: hard
Question: What are the names of all pilots listed by descending age?
Formula: SORT(SUMMARIZE(HSTACK(B1,A1),SUMX(C1)), 3, -1)
Formula2: SORT(SUMMARIZE(HSTACK(B2:B13,A2:A13),SUMX(C2:C13)), 3, -1)
Level: hard
Question: names and ids of pilot aged at least 25.
Formula: LET(query1,SUMMARIZE(HSTACK(B1,A1),SUMX(C1)),FILTER(query1,CHOOSECOLS(query1,3)>=25))
Formula2: LET(query1,SUMMARIZE(HSTACK(B2:B13,A2:A13),SUMX(C2:C13)),FILTER(query1,CHOOSECOLS(query1,3)>=25))
Level: hard
Question: The name and id of pilot whose age is at least 25.
Formula: LET(query1,SUMMARIZE(HSTACK(B1,A1),SUMX(C1)),FILTER(query1,CHOOSECOLS(query1,3)>=25))
Formula2: LET(query1,SUMMARIZE(HSTACK(B2:B13,A2:A13),SUMX(C2:C13)),FILTER(query1,CHOOSECOLS(query1,3)>=25))
Level: hard
Question: Pilot names from A to Z and their ids.
Formula: SORT(UNIQUE(HSTACK(A1,B1)), 2, 1)
Formula2: SORT(UNIQUE(HSTACK(A2:A13,B2:B13)), 2, 1)
Level: medium
Question: pilot names by ids in numerical order.
Formula: SORT(UNIQUE(HSTACK(B1,A1)), 2, 1)
Formula2: SORT(UNIQUE(HSTACK(B2:B13,A2:A13)), 2, 1)
Level: medium
Question: Names of pilots aged 30 or younger in descending order of ids.
Formula: SORT(LET(query1,SUMMARIZE(HSTACK(B1,A1),SUMX(C1)),FILTER(query1,CHOOSECOLS(query1,3)<=30)), 2, -1)
Formula2: SORT(LET(query1,SUMMARIZE(HSTACK(B2:B13,A2:A13),SUMX(C2:C13)),FILTER(query1,CHOOSECOLS(query1,3)<=30)), 2, -1)
Level: hard
Question: The pilot names from A to Z and ids.
Formula: SORT(UNIQUE(HSTACK(A1,B1)), 2, 1)
Formula2: SORT(UNIQUE(HSTACK(A2:A13,B2:B13)), 2, 1)
Level: medium
Question: Names of pilots aged at most 30 in descending order of ids.
Formula: SORT(LET(query1,SUMMARIZE(HSTACK(B1,A1),SUMX(C1)),FILTER(query1,CHOOSECOLS(query1,3)<=30)), 2, -1)
Formula2: SORT(LET(query1,SUMMARIZE(HSTACK(B2:B13,A2:A13),SUMX(C2:C13)),FILTER(query1,CHOOSECOLS(query1,3)<=30)), 2, -1)
Level: hard
Question: the name and id of pilot who is at least 25.
Formula: LET(query1,SUMMARIZE(HSTACK(B1,A1),SUMX(C1)),FILTER(query1,CHOOSECOLS(query1,3)>=25))
Formula2: LET(query1,SUMMARIZE(HSTACK(B2:B13,A2:A13),SUMX(C2:C13)),FILTER(query1,CHOOSECOLS(query1,3)>=25))
Level: hard
Question: the pilot names by their ids in numerical order.
Formula: SORT(UNIQUE(HSTACK(B1,A1)), 2, 1)
Formula2: SORT(UNIQUE(HSTACK(B2:B13,A2:A13)), 2, 1)
Level: medium