How many presidents have been black?
1
1
1
1
1
1
2
1
2
1
2
1
2
1
2
1
3
2
1
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
5
3
2
1
4
5
3
2
0
1
4
5
3
2
0
1
4
5
3
2
1
4
0
5
3
2
1
4
5
3
2
0
4
5
3
2
0
4
5
3
2
4
0
5
3
2
4
5
3
2
0
6
4
5
3
0
6
4
5
3
6
4
0
5
3
7
6
4
5
3
0
7
6
4
5
3
7
6
4
5
7
6
4
5
8
7
6
5
8
7
6
9
5
8
7
11
6
9
5
8
7
11
6
9
8
7
11
6
9
8
7
11
6
9
One
8
7
11
6
9
10
One
8
7
11
6
9
10
13
One
8
7
11
6
9
10
13
One
8
7
11
6
9
10
13
One
8
7
11
6
9
12
10
13
One
8
7
11
6
9
12
10
ONE
ONE