How many presidents of the United States have been assassinated?
4
2
1
3
2
1
4
3
2
1
4
3
2
5
1
4
3
2
5
1
4
3
2
5
1
4
3
2
5
1
4
3
2
5
1
4
3
2
5
1
4
3
0
2
5
1
4
3
2
5
0
1
4
3
2
5
1
0
4
3
2
5
6
1
4
3
0
2
5
6
1
4
3
2
5
6
1
4
3
2
5
6
1
4
3
7
2
5
6
1
4
3
7
2
5
6
1
4
3
7
2
5
6
1
4
3
7
2
5
6
1
4
3
8
7
5
6
11
9
4
8
7
5
6
11
9
8
7
5
6
11
9
8
7
6
11
9
8
7
6
11
9
10
8
7
6
11
9
10
8
7
13
6
11
9
10
8
7
13
6
11
9
10
12
8
7
13
6
11
9
10
12
8
7
13
6
11
9
10
12
8
7
13
6
11
9
10
12
8
7
14
13
6
11
66
66
62
66
62
66
62