Table:
0
A
B
C
D
1
department id
head id
temporary acting
management
2
2
5
Yes
3
15
4
Yes
4
2
6
Yes
5
7
3
No
6
11
10
No

Questions and formulas:
Question: the number of acting statuses.
Formula: ROWS(UNIQUE(C1))
Formula2: ROWS(UNIQUE(C2:C6))
Level: easy