數學最懂你⋯⋯

[suen]

1. Think of a number
2. Double it
3. Add 6
4. Divide it in half
5. Subtract the number you started
6. The answer is 3
7. Correct?

[kongting]

自己减自己这一块（

[Axiom]

这个不够高明，0秒看出问题在哪

[Mrs.Castorice]

如果我想的数字是JQKA呢