How many countries in South America have a land area greater than 400,000 square miles?
5
2
2
2
5
3
2
5
3
1
2
5
3
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
3
4
1
2
5
7
3
4
1
2
5
7
3
4
1
2
5
7
3
4
1
2
5
7
3
4
1
2
5
7
3
6
4
1
8
2
5
7
3
6
4
1
8
2
5
7
3
6
4
1
8
2
5
7
3
6
4
1
8
5
7
10
3
6
4
1
8
5
7
10
3
6
4
9
1
8
7
10
6
4
9
1
8
7
10
6
4
13
9
8
7
10
6
11
4
13
9
8
7
10
6
11
13
9
8
7
10
6
11
13
9
8
7
10
6
11
13
9
8
7
10
6
11
13
9
8
7
10
6
11
13
9
8
7
10
6
12
11
13
9
8
7
10
6
12
11
13
9
8
10
6
12
11
13
4 countries