How many US presidents were there?
45
4
4
5
3
4
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
6
1
2
5
3
4
6
1
0
2
5
3
4
6
1
2
0
5
3
4
6
1
7
2
5
3
0
4
6
1
7
2
5
3
8
4
6
1
0
7
2
5
3
8
4
6
1
9
7
2
0
5
3
8
4
6
1
9
7
2
5
3
8
0
4
6
1
9
7
2
11
5
3
8
6
1
9
0
7
2
11
5
3
8
6
1
9
10
7
2
0
11
8
6
1
9
10
7
2
11
12
13
8
0
6
1
9
10
7
11
12
13
8
6
1
9
10
0
7
11
12
13
8
6
1
9
10
7
11
12
13
8
6
1
9
10
7
11
12
13
8
6
9
10
14
7
66
11
16
12
13
8
66
62
61
66