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[" Q.18The number of common tangent(s) t...

[" Q.18The number of common tangent(s) to the circles "x^(2)+y^(2)+2x+8y-23=0" and "],[x^(2)+y^(2)-4x-10y+19=0" is "],[[" (A) "1," (B) "2],[" Q.19"A,B" and "C" are points in the xyplane such that "A(1,2);B(5,6)" and "AC=3BC" .Then "]]

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