I can speak without a mouth and hear without ears. What am I?

Category: Brain · Difficulty: medium

Hint: I exist in a space where sound travels.

Answer

A sound

Explanation

An echo is a sound that is reflected off a surface and heard again, hence it can 'speak' and 'hear' without physical features.

This is a medium brain riddle — a moderate challenge for most people. The answer is A sound.

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