in reply to Golf: Selection from sets (Choose)

55 chars (see update), not counting the sub subName parts. 
sub a{
eval join'*',1..pop
}

sub f {
a($_[0])/(a($_[1])*a($_[0]-$_[1]))
}

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Update: changed code a bit, down to 53 characters now

The 15 year old, freshman programmer,
Stephen Rawls

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Re (tilly) 1: Golf: Selection from sets (Choose)
by tilly (Archbishop) on May 25, 2001 at 04:30 UTC
    It is usual when counting helper subroutines to count the declaration of the helper in the overall length. So your code is of length 60.

    Incidentally here is another reasonably efficient one to compute of length 53. Mainly interesting because it works on a different principle. 

    sub c{
my@c=1;map$c[$_]+=$c[$_-1],1..$_[1]for 1..$_[0];pop@c
}

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