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Q.

The normal threshold of hearing is around
A. 60-80 db
B. 45-60 db
C. 100-120 db
D. 25-45 db

Tags: money, education, entertainment
Asked by question answer, 02 Dec '11 06:49 am
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Answers (4)

 
1.

25-45 db
Answered by klm, 02 Dec '11 06:53 am

 
  
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2.

25-45 db
Answered by Tanupriya, 02 Dec '11 12:55 pm

 
  
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3.

D
Answered by aflatoon, 02 Dec '11 09:21 am

 
  
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4.

D
Answered by Manju Sikri, 02 Dec '11 09:20 am

 
  
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