1.

The lines \[2x+y-1=0,ax+3y-3=0\] and \[3x+2y-2=0\] are concurrent for    [EAMCET 1994]

A.   All a       
B.   \[a=4\]only
C.   \[-1\le a\le 3\]       
D.   \[a>0\]only
Answer» B.   \[a=4\]only


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