Table:
0
A
B
C
D
1
event id
event name
party id
member in charge id
2
1
Annaual Meeting
1
4
3
2
Conference
1
12
4
3
Annaual Meeting
2
2
5
4
Budget Meeting
2
3
6
5
Annaual Meeting
3
10
7
6
Election Meeting
3
11
8
7
Budget Meeting
3
15
9
8
Election Meeting
1
4

Questions and formulas:
Question: How many party events do we have?
Formula: SUMMARIZE(A1,SUMX(C1))
Formula2: SUMMARIZE(A2:A9,SUMX(C2:C9))
Level: easy
Question: Count the number of party and events,
Formula: HSTACK(SUM(C1), SUM(A1))
Formula2: HSTACK(SUM(C2:C9), SUM(A2:A9))
Level: medium
Question: The number of events and parties.
Formula: HSTACK(SUM(C1), SUM(A1))
Formula2: HSTACK(SUM(C2:C9), SUM(A2:A9))
Level: medium
Question: the number of parties for different events
Formula: SUMMARIZE(A1,DCOUNTX(C1))
Formula2: SUMMARIZE(A2:A9,DCOUNTX(C2:C9))
Level: easy