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[" 30.If "p,q in{1,2,3,4}" the number of...

[" 30.If "p,q in{1,2,3,4}" the number of equations of the form "px^(2)+qx+1=0" having real roots is "],[[" (A) "15," (B) "9," (C) "7," (D) "8]]

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