Table:
0
A
B
C
D
E
F
G
1
customer id
customer first name
customer last name
customer address
customer phone
customer email
other customer details
2
1
Aniyah
Feest
55975 Theodore Estates
Lake Brody, VT 57078
(673)872-5338
fahey.dorian@example.com
3
2
Susie
Wiza
6478 Moen Isle Suite 910
Schimmelmouth, VT 96364-4898
679-845-8645x94312
idickinson@example.com
4
3
Marcel
Brekke
1965 Abernathy Plains
Port Lilla, LA 44867
1-511-656-6664
nichole.rodriguez@example.com
5
4
Art
Turcotte
6862 Domenic Port
New Elbert, DE 86980-8517
941-213-6716x675
enrique59@example.com
6
5
Armani
Farrell
3031 Ludwig Square
Unaview, SC 86336-3287
224-123-1012
dauer@example.net
7
6
Kiel
Schinner
19935 Allie Bypass Apt. 409
Coleberg, FL 69194-5357
1-564-044-3909
ebert.omer@example.net
8
7
Izabella
Erdman
23793 Athena Inlet Apt. 455
Schmidtmouth, NH 15794
751.049.9948
kling.catalina@example.com
9
8
Elyssa
Lind
094 Julianne Mill
Webstertown, KY 91980-4004
+12(6)9024410984
dell13@example.com
10
9
Faustino
Langworth
0748 Lola Union Apt. 874
Reynoldsfurt, NM 94584-3767
284.749.0453
ahomenick@example.org
11
10
Axel
Effertz
936 Lula Overpass
East Alisonville, NH 14890
+90(8)1290735932
kyra.murazik@example.org
12
11
Frederic
Swift
7127 Hilpert Parks
South Johnfort, SD 67577-9504
1-207-977-5182
keegan16@example.com
13
12
Bryce
Rath
74962 Hugh Mills
North Laurenland, KY 46376
(415)237-0701x3115
grady.general@example.org
14
13
Serenity
Effertz
71560 Eulah Squares
Torphyberg, OK 34312-0380
1-894-567-2283
schaden.katrina@example.net
15
14
Blanche
Huels
47286 Mraz Park Apt. 424
Jocelynfurt, OH 59023-2787
(703)950-4708x8972
huels.antonina@example.com
16
15
Nat
Davis
163 Collier Square
New Ceciltown, AL 64723-5646
246-469-4472x359
earlene.carroll@example.net

Questions and formulas:
Question: customers' ids, phones, and full names
Formula: UNIQUE(HSTACK(A1,B1,C1,E1))
Formula2: UNIQUE(HSTACK(A2:A16,B2:B16,C2:C16,E2:E16))
Level: easy
Question: The id, phone and email of Aniyah Feest.
Formula: LET(query1,FILTER(A1:G1,(B1="aniyah")*(C1="feest")),UNIQUE(CHOOSECOLS(query1,5,6,1)))
Formula2: LET(query1,FILTER(A2:G16,(B2:B16="aniyah")*(C2:C16="feest")),UNIQUE(CHOOSECOLS(query1,5,6,1)))
Level: hard
Question: Aniyah Feest's phone, email and id 
Formula: LET(query1,FILTER(A1:G1,(B1="aniyah")*(C1="feest")),UNIQUE(CHOOSECOLS(query1,5,6,1)))
Formula2: LET(query1,FILTER(A2:G16,(B2:B16="aniyah")*(C2:C16="feest")),UNIQUE(CHOOSECOLS(query1,5,6,1)))
Level: hard
Question: the id, phone, first and last name of customer
Formula: UNIQUE(HSTACK(A1,B1,C1,E1))
Formula2: UNIQUE(HSTACK(A2:A16,B2:B16,C2:C16,E2:E16))
Level: easy
Question: The phone, email and id of the customer Aniyah Feest.
Formula: LET(query1,FILTER(A1:G1,(B1="aniyah")*(C1="feest")),UNIQUE(CHOOSECOLS(query1,5,6,1)))
Formula2: LET(query1,FILTER(A2:G16,(B2:B16="aniyah")*(C2:C16="feest")),UNIQUE(CHOOSECOLS(query1,5,6,1)))
Level: hard