The numbers seem to vary.
The most important is to get thru the first day (sim)
On my group we started with 11 and then the 2nd day there were 7 left.
Now they have taken 4, 2 waiting and 1 got the No.
A friends group: all those got in, (that got to the 2nd day)
Then another group: only 1 got in...............
Anyway, good luck, go their, give it your best and be yourself.