You cannot see me, yet I can be essential. I can be real or imaginary. What am I?
Category: Math · Difficulty: expert
Hint: Think about something that relates to calculations.
Answer
A number's root
Explanation
A number's root can be both real and imaginary, while the other options don't match this duality.
This is a expert math riddle — one of the harder riddles here. The answer is A number's root.
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