If you take me, I will not be there. If you leave me, I will be everywhere. What am I?
Category: Math · Difficulty: hard
Hint: Think about how numbers change when you remove something.
Answer
The idea of emptiness
Explanation
Removing 0 from a number doesn’t change its value, but it’s essential to the numeral system.
This is a hard math riddle — a tricky one that takes a little thought. The answer is The idea of emptiness.
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