Question:The mean proportional to `0.32` and `0.02` is : 

A `0.8` 
B `0.08` 
C `0.008` 
D `0.4` 

+ Answer
A 

+ Explanation
Required mean proportion

`= sqrt(0.32 xx 0.02)`

`= sqrt(64/10000)`

`= 8/100`

`= .08`.

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Md. Habib Ullah

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