Table:
0
A
B
C
D
1
mailshot id
customer id
outcome code
mailshot customer date
2
4
3
Order
3/15/2018 15:43
3
10
1
No Response
3/4/2018 13:06
4
15
9
No Response
3/11/2018 11:32
5
20
11
Order
3/1/2018 21:39
6
7
1
Order
3/13/2018 5:18
7
10
4
No Response
3/15/2018 4:05
8
15
6
Order
3/6/2018 21:21
9
10
13
Order
2/26/2018 2:17
10
15
13
Order
3/7/2018 11:19
11
17
11
Order
3/5/2018 20:48
12
18
14
Order
3/14/2018 1:08
13
15
6
Order
2/27/2018 20:51
14
18
2
Order
3/20/2018 23:40
15
7
1
No Response
3/3/2018 15:29
16
6
6
No Response
3/5/2018 17:35

Questions and formulas:
Question: Show the outcome code of mailshots along with the number of mailshots in each outcome code.
Formula: SUMMARIZE(C1,SUMX(A1))
Formula2: SUMMARIZE(C2:C16,SUMX(A2:A16))
Level: easy