How many black presidents has the USA had?
1
1
1
1
1
1
1
1
2
1
2
1
2
1
2
1
2
1
2
3
1
4
2
3
1
4
2
3
1
4
2
3
1
4
2
3
1
4
2
3
5
1
4
2
0
3
5
1
4
2
3
5
0
1
4
2
3
5
4
0
2
3
5
4
2
0
3
5
4
2
3
5
0
4
2
3
5
4
2
3
5
4
2
3
5
4
6
3
5
4
6
3
5
One
4
6
3
5
One
4
6
3
5
One
4
7
6
3
5
One
4
7
6
5
One
7
6
8
5
One
7
6
8
5
One
7
6
9
8
5
One
7
11
6
9
8
5
One
7
11
6
9
8
One
7
11
6
9
8
One
7
11
6
9
8
One
7
11
6
9
8
One
7
10
11
6
9
8
One
7
10
11
6
9
8
One
7
10
13
11
6
9
8
One
7
10
13
11
Two
No
6
9
Two
ONE
ONE
ONE
ONE
One.
ONE
One.