Days to summon Headless Horseman Kills per day per group Total kills over 15 days Drop chance for one kill Probability of item dropping 1 times over 75 kills Probability of item dropping 2 times over 75 kills Probability of item dropping 3 times over 75 kills Probability of item dropping 4 times over 75 kills Probability of item dropping 5 times over 75 kills Probability of item dropping 5 or more times over 75 summons Chance one player will receive both items Chance all five players will receive both items
Sinister SquashlingHallowed Helm 15 15 5 5 75 75 2%
9%
0.33 0.26 0.14 0.05 1.6%
0.01 0.03 0.07 0.11 15.2%
2.1% 19.4% 1.6%
77.7%
Proability of Probability Top Roll Probability of Sinister of Squashling Hallowed dropping Helm dropping and player and player getting getting top roll top roll
0.2 0.25 0.33 0.5 1
0.07 0.07 0.05 0.03 0.02
0 0.01 0.02 0.06 0.15
0.22
87%