If the system of equations : x + 4ay+az ...

If the system of equations : `x + 4ay+az =0, x + 3by+ bz = 0 , x + 2cy + cz =0` has a non a non - zero solution ,then a,b,c are in :

A

A.P

B

G.P

C

H.P

D

None of these

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The correct Answer is:

C

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