The number of common solutions for `4x - 4y - 7= 0` and `16x - 16y = 35` is

The number of common tangents of the circles x^(2) +y^(2) =16 and x^(2) +y^(2) -2y = 0 is :

The number of common tangents of the circles x^(2) +y^(2) =16 and x^(2) +y^(2) -2y = 0 is :

The common chord of x^2 + y^2 - 4x - 4y = 0 and x^2 + y^2 = 16 substends at the origin an angle equal to

The common chord of x^2 + y^2 - 4x - 4y = 0 and x^2 + y^2 = 16 substends at the origin an angle equal to

Number of solution in the given pair of equation is infinitely many solutions x + 2y - 8 = 0 2x + 4y = 16

The number of common tangentss to the circles x^(2)+y^(2)-8x+2y=0 and x^(2)+y^(2)-2x-16y+25=0 is

The number of common tangentss to the circles x^(2)+y^(2)-8x+2y=0 and x^(2)+y^(2)-2x-16y+25=0 is

The pair of linear equations 3x+4y+5=0 and 12x+16y+15=0 have……..

The common chord of x^(2) + y^(2) - 4x - 4y " and " x^(2) + y^(2) = 16 subtends at the origin an angle equal to