which of the following is not correct?

Which of the following is not correct? => A reflection is an isometry. or A reflection does not reverse orientation. or A reflection does not change size. or A reflection reverses orientation...

Which of the following is correct? => B or A or D or C..

Which of the following is correct? => Equal vectors have the same magnitude. or Equal vectors have the same direction. or Equal vectors do not have the same direction and magnitude. or Both (A) and (B)..

Which of the following is correct? => Asymptote of a curve is a straight line which cuts the curve or Asymptote of a curve is a part of it or Asymptote of a curve is a straight line or Asymptote of a curve is not a straight line..

Which of the following is correct? => Equivalent directed line segments have the same direction. or Equivalent directed line segments have the same length. or Equivalent directed line segments have different directions. or Both (A) and (B)..

Which of the following is correct? => In an obtuse angled triangle the medians intersect outside the triangle or In an acute angled triangle the medians do not intersect inside the triangle or In a right angled triangle the medians do not intersect inside the triangle or The med..

Which of the following is correct? => Every point of a polar coordinate system has unique pair of polar coordinates. or Each pair of polar coordinates determine a unique point. or Every point of a polar coordinate system has 2 pairs of polar coordinates. or Each pair of polar co..

Which of the following is correct? => Every ordered pair of real numbers describes the position of a unique point of plane or Every ordered triple of real numbers describes the position of a unique point of space or Every ordered pair of real numbers describes the position of a ..

Which of the following is correct ? => 2 n P r ≤ n C r or n P r ≤ n C r or n P r = n C r or n P r ≥ n C r..

Which of the following is correct ? => 5 + 7 i > 3 + 4 i or 2 + 4 i > 3 - 2 i or 10 + 9 i > 5 + 8 i or None of these..