The increasing order of acidic strength of the following in aqueous solution is
If the angle between the circles \( x^2+y^2-2x+ky+1=0 \) and \( x^2+y^2-kx-2y+1=0 \) is \( \cos^{-1}\left(\frac{1}{4}\right) \) and \( k<0 \) then the point which lies on the radical axis of the given circles is
The mean deviation from the median for the following data is