China Naming Network - Baby naming - The principle of drawing lots is not put back into the example.
The principle of drawing lots is not put back into the example.
Arrange 10 labels in sequence,
A( 10， 10)= 10！ A possible outcome.
One of Wang's three questions appeared in the third position, including
C(3， 1) A(9，9)=3 9！ ? Seed fruit
So, the possibility is
3 9! / 10! =3/ 10