This intelligence test, called "Reachable Duck Question", has special rules: if the answer is wrong, the avatar should be changed to Reachable Duck and kept for 3 days; And you can't tell anyone the answer.
Some netizens replied "1 1 bottle". Because 100 empty bottles can be exchanged for 10 bottles of coke, and finished 10 bottles can be exchanged for 1 bottle.
However, all those who answered "1 1 bottle" violated the rules of the game. Because as mentioned earlier, "you can't tell anyone the answer"