Table:
0
A
B
C
1
customer id
customer details
customers
2
1
America Jaskolski
3
2
Ellsworth Paucek
4
3
Mrs. Hanna Willms
5
4
Dr. Diana Rath
6
5
Selena Gerhold
7
6
Lauriane Ferry PhD
8
7
Sydnie Friesen
9
8
Dayana Robel
10
9
Mr. Edwardo Blanda I
11
10
Augustine Kerluke
12
11
Buddy Marquardt
13
12
Mr. Randal Lynch III
14
13
Mrs. Liza Heller V
15
14
Mrs. Lilly Graham III
16
15
Miss Felicita Reichel

Questions and formulas:
Question: What are all the distinct details of the customers?
Formula: UNIQUE(HSTACK(B1,C1))
Formula2: UNIQUE(HSTACK(B2:B16,C2:C16))
Level: easy
Question: Return the distinct customer details.
Formula: UNIQUE(B1)
Formula2: UNIQUE(B2:B16)
Level: easy
Question: All customer detail
Formula: UNIQUE(B1)
Formula2: UNIQUE(B2:B16)
Level: easy
Question: the details of the customers 
Formula: UNIQUE(HSTACK(B1,C1))
Formula2: UNIQUE(HSTACK(B2:B16,C2:C16))
Level: easy
Question: The details of customers.
Formula: UNIQUE(HSTACK(B1,C1))
Formula2: UNIQUE(HSTACK(B2:B16,C2:C16))
Level: easy