Well, this is a little longer than one line!

If you don't want to think too hard, you can find the expected value experimentally -- Just do a million (or so) status rolls see what the average is. Note the array-slice of the sort, which finds the 3 highest dice with much less mucky-muck. 

use List::Util 'sum';

my ($iter, $sum) = shift || 1_000_000;

$sum += sum +(sort map {1 + int rand 6} 1..4)[1..3] for 1..$iter;

print $sum/$iter, $/;

[download]
For a million iterations, I got an expected value of 12.244657, which is within 0.0005% of your exact answer.

You could also use some of the Die/Dice modules on CPAN, but rolling (fair) dice is pretty trivial to do yourself.

blokhead

In reply to Re: Rolling DND Dice. by blokhead
in thread Rolling DND Dice. by grendelkhan

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