I exist in pairs, yet I am alone, my essence is found in every tone. I may seem abstract, but I am quite real, what number am I that can make you feel?
Category: Math · Difficulty: expert
Hint: Consider a number that extends beyond the real axis.
Answer
Imaginary unit
Explanation
The imaginary unit i is defined as the square root of -1, used in complex numbers.
This is a expert math riddle — one of the harder riddles here. The answer is Imaginary unit.
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