Approximate ratio of the permeabilities of two clean soils having D10

1.	Approximate ratio of the permeabilities of two clean soils having D10 = 0.6 mm and D10 = 0.3 mm is
A.	4
B.	3.75
C.	4.25
D.	3.5
Answer» B. 3.75

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Approximate ratio of the permeabilities of two clean soils having D10 = 0.6 mm and D10 = 0.3 mm is

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