How many Americans have walked on the moon?
12
2
3
1
2
3
1
2
3
1
2
3
4
1
5
2
3
4
1
5
2
3
4
1
5
2
3
4
1
5
2
3
4
1
6
5
2
3
4
1
6
5
2
3
4
1
6
5
2
3
4
1
7
6
5
2
3
4
1
7
0
6
5
2
3
4
1
7
6
5
0
2
3
4
1
7
6
5
2
3
4
1
0
8
7
6
5
2
3
4
1
8
7
9
0
6
5
2
3
4
1
8
7
9
6
5
0
2
3
4
1
8
7
9
6
5
2
3
4
1
0
8
7
9
6
5
2
3
4
11
1
8
7
9
0
6
5
4
11
8
7
9
6
5
0
4
12
11
8
7
9
6
13
10
5
4
12
11
0
8
7
9
6
13
10
5
12
11
8
7
9
0
6
13
10
12
11
8
7
9
6
16
13
10
0
12
11
8
7
9
6
16
13
10
12
11
7
112
66
133
112