Table:
0
A
B
C
D
E
1
employee id
role code
employee name
other details
employees
2
1
ED
Koby
h
3
2
ED
Kenyon
f
4
3
PR
Haley
b
5
5
PT
Clemens
b
6
7
PT
Jordyn
v
7
8
MG
Erling
u

Questions and formulas:
Question: how many employees?
Formula: ROWS(UNIQUE(E1))
Formula2: ROWS(UNIQUE(E2:E7))
Level: easy