How many Mario Kart games sold at least 20 million copies?
3
2
3
2
3
2
3
2
3
2
3
1
2
3
1
2
3
5
1
4
2
3
5
1
4
2
3
5
1
4
2
3
5
1
4
2
3
5
1
4
2
3
5
1
4
2
3
5
1
4
2
3
5
1
4
2
3
5
1
4
2
3
5
1
7
4
6
2
3
5
1
7
4
6
0
2
3
5
1
7
4
6
2
3
5
1
7
0
4
6
2
3
5
1
7
8
4
0
6
5
1
7
8
4
6
0
5
1
7
8
4
6
5
1
7
8
10
4
6
5
1
7
8
10
4
6
5
7
8
10
4
6
5
7
8
10
4
6
7
8
10
6
7
8
10
9
6
7
8
10
9
6
7
8
10
9
6
7
8
10
9
6
13
7
8
10
9
6
13
7
8
10
11
9
6
13
7
8
10
11
9
6
13
7
8
10
11
9
6
13
8
10
11
9
13
8
10
11
9
ten
ten