Glitch u know how when u afk kill something, it automatically goes in ur inv. If your inventory is full, it goes to ur storage. If you storage is FULL, where does it go???
If you're full on inventory and storage then the items are lost. Grey slots are not unlimited, they only extend to the normal maximum number of slots available with all skills.
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Computing the probability that at least one of the following events will occur:
P(a or b ... or z) = 1 - P(!a and !b ... and !z) Probability