#!/usr/bin/perl -w
use strict;
my $DAYS_IN_YEAR = 365;
print "\n# of People \t Birthday Match Likelihood\n" . '-'x80 . "\n";
for my $people ( 2 .. 40 ){
my $tmp_days = $DAYS_IN_YEAR;
my $probability=1;
for ( 1 .. $people ){
$probability *= $tmp_days--;
}
$probability /= $DAYS_IN_YEAR ** $people;
$probability = ( 1 - $probability ) * 100;
print "$people \t\t $probability %\n";
}
exit;