How many Romanov children of Emperor Nicholas II were killed during the Bolshevik Revolution?
5
1
2
1
2
1
2
1
2
1
2
3
1
2
4
3
1
5
2
4
3
1
5
2
4
3
1
5
2
4
3
1
5
2
4
3
1
5
2
4
3
1
5
2
4
3
1
5
2
4
0
3
1
5
2
4
3
1
5
6
0
2
4
3
1
5
6
2
0
4
3
1
5
6
2
4
7
0
3
1
5
6
2
4
7
3
1
5
6
0
2
4
7
3
1
8
5
6
2
0
4
7
3
8
5
6
4
7
0
3
9
8
5
6
4
7
3
9
8
5
6
0
4
7
3
9
8
5
6
10
0
4
7
3
9
8
5
6
10
4
7
0
9
8
5
6
10
7
9
8
6
10
0
11
7
9
8
6
10
11
0
7
9
8
6
10
11
13
7
9
12
8
6
10
11
13
7
9
12
8
6
10
11
13
7
9
12
8
6
10
11
13
14
7
12
8
6
62
66
62
261