How many Apollo missions successful took crews to the Moon and back?
6
5
5
7
5
4
7
3
5
4
7
3
5
4
7
3
5
11
4
7
3
5
11
4
7
3
5
9
11
4
7
3
5
9
11
4
7
6
3
5
9
11
4
7
0
6
3
2
5
9
11
4
7
6
3
13
2
5
9
11
4
7
6
3
13
2
8
5
9
11
4
7
6
3
13
2
1
8
5
10
9
11
4
7
6
3
13
2
12
1
8
5
10
9
11
4
7
6
3
13
2
12
1
8
5
10
9
11
4
7
6
3
13
2
12
1
8
5
10
9
11
4
7
6
3
13
2
12
1
8
5
10
9
11
4
7
6
3
13
2
12
1
8
5
10
9
11
4
7
6
3
13
2
12
1
8
5
10
9
11
4
7
6
3
13
2
12
1
8
10
9
11
4
7
6
14
3
13
2
12
1
8
10
9
11
4
69
6
14
3
13
2
12
1
8
76
62
109
117
ten
68