For the
writer, there are 20
1.
1
+ 39 = 40
2.
2
+ 38 = 40
3.
3
+ 37 = 40
4.
4
+ 36 = 40
5.
5
+ 35 = 40
6.
6
+ 34 = 40
7.
7
+ 33 = 40
8.
8
+ 32 = 40
9.
9
+ 31 = 40
10.
10
+ 30 = 40
11.
11
+ 29 = 40
12.
12
+ 28 = 40
13.
13
+ 27 = 40
14.
14
+ 26 = 40
15.
15
+ 25 = 40
16.
16
+ 24 = 40
17.
17
+ 23 = 40
18.
18
+ 22 = 40
19.
19
+ 21 = 40
20.
20
+ 20 = 40
