Q.The locus of the centre of the circle which touches the circle $x^2 + y^2 - 2x - 4y - 20 = 0$ externally and also touches x-axis is

parabola

ellipse

hyperbola

circle

The correct solution involves applying the fundamental concept to derive the final value step by step...

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Q.The locus of the centre of the circle which touches the circle x2+y2−2x−4y−20=0x^2 + y^2 - 2x - 4y - 20 = 0x2+y2−2x−4y−20=0 externally and also touches x-axis is