How many American presidents have been assassinated?
4
1
2
1
2
3
1
2
4
3
1
2
4
3
1
2
5
4
3
1
2
5
4
3
1
2
5
4
3
1
2
5
4
3
1
2
5
4
3
1
2
0
5
4
3
1
2
0
5
4
3
1
2
5
4
3
0
1
2
5
4
3
1
2
0
5
4
3
6
1
2
0
5
4
3
6
1
2
5
4
3
6
1
2
5
4
3
6
1
2
5
7
4
3
6
1
2
5
7
4
3
6
1
2
5
7
4
3
6
5
7
4
3
6
8
5
7
4
11
6
9
8
5
7
11
6
9
8
5
7
11
6
9
8
7
11
6
9
8
7
11
6
9
8
10
7
11
6
9
8
10
7
13
11
6
9
8
10
7
13
11
6
9
8
10
12
7
13
11
6
9
8
10
12
7
13
11
6
9
8
10
12
7
13
11
6
14
9
8
10
12
7
13
66
66
62
66
62
59
66
57