How many United States presidents have been assassinated?
4
2
1
2
3
1
4
2
3
1
4
2
3
1
5
4
2
3
1
5
4
2
3
1
5
4
2
3
1
5
4
2
3
1
5
4
2
3
1
5
0
4
2
3
1
5
4
2
3
0
1
5
4
2
3
1
0
5
4
2
3
1
5
0
6
4
2
3
1
5
6
4
2
3
1
5
6
4
2
3
1
5
6
4
2
3
1
7
5
6
4
2
3
1
7
5
6
4
2
3
1
7
5
6
4
2
3
1
7
5
6
4
3
8
7
5
6
11
4
9
8
7
5
6
11
9
8
7
5
6
11
9
8
7
6
11
9
8
7
6
11
10
9
8
7
6
11
10
9
8
13
7
6
11
10
9
8
13
7
6
11
10
12
9
8
13
7
6
11
10
12
9
8
13
7
6
11
10
12
9
8
13
7
6
11
14
10
12
9
8
13
7
11
66
62
66
62
66
62
66
61