How many U.S. presidents have been assassinated?
4
2
1
2
1
3
4
2
1
3
4
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
0
3
4
5
2
1
3
0
4
5
2
1
3
4
5
2
0
1
3
6
4
5
2
1
3
6
4
5
2
1
3
6
4
5
2
1
3
6
4
5
2
1
3
7
6
4
5
2
1
3
7
6
4
5
2
1
3
7
6
4
5
3
7
6
4
5
8
7
6
9
5
11
8
7
6
9
5
11
8
7
6
9
11
8
7
6
9
11
8
7
6
9
10
11
8
7
6
9
10
11
8
7
6
9
10
13
11
8
7
6
9
10
13
11
8
7
6
9
10
12
13
11
8
7
6
9
10
12
13
11
8
7
6
9
10
12
13
11
8
7
6
9
10
12
14
66
66
62
66
62
62
59
58