For a normal person, audible frequency range lies between

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11 + 6 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

For a normal person, audible frequency range lies between.

25 Hz - 25 KHz

30 Hz - 30 KHz

10 Hz - 10 KHz

20 Hz - 20 KHz