How many black US senators have there been?
11
2
1
2
1
2
1
2
1
3
2
4
1
3
2
4
1
3
5
2
4
1
3
5
2
4
1
3
5
2
4
1
3
5
2
4
1
3
5
2
0
4
1
3
5
2
4
0
1
3
5
2
4
1
3
5
0
2
4
1
3
5
6
2
0
4
1
3
5
6
2
4
1
3
5
6
2
4
7
1
3
5
6
2
4
7
1
3
5
6
2
4
7
1
3
5
6
8
2
4
7
1
3
5
6
8
4
7
3
5
6
8
4
7
3
5
6
8
4
7
3
5
9
11
6
8
4
7
5
9
11
6
8
7
5
9
11
6
8
7
9
11
6
8
7
9
11
6
10
8
7
13
9
11
6
10
8
7
13
9
11
6
10
8
12
7
13
9
11
6
10
8
12
7
13
9
11
6
10
8
12
7
13
9
11
6
10
8
12
7
13
9
11
66
ONE
62
57
66
ONE
132
61