Mơi lượm lặt được cái này, chia sẻ cho bà con :d
Tỉ lệ card trong 1000 pack:
3565 common
1155 rare
215 epic
65 legend
Based upon this data, Marinconz' provided some interesting 'fun facts':
The chances of getting a pack with any 5 legendary cards is one in a million
The chances of getting a pack with any 5 golden legendary cards is 1 in 3.2 billion
There's a 0.4% probability of getting 2 legendaries in a single pack
The probability of getting a pack with only one common card is about ~0.80%
There's a 16.26% probability of getting a pack with any golden card
Only 2.19% of common cards were golden, while 7.69% of legendaries were
The average $50 purchase of 40 packs will be worth about 3,600 Arcane Dust
The most common distribution was a '4100' - 4 commons and 1 rare - accounting for 61% of packs opened
The second most common distribution was a '3200' - 3 commons and 2 rares - accounting for 12.2% of packs opened
Nguồn:
http://hearthstone.gamepedia.com/Card_pack