'Rut or Mast' is present in which species of animal

If two parallel lines are intersected by a transversal, then which of the options below is not necessarily correct?

The slope of the equation 24x+8y=56 is

In a race A beats B by 120m. B beats C by 260m and A beats C by 300m what is the length of race?

Find the equation of the circle passing through the points (1, 2) and (2, -1), and whose center lies on the line x - 2y + 3 = 0.

Find the equation of the line passing through the points (1, 2) and (3, 8).

Solve:  ∫[2x/(x⁴+1)] dx

Find the co-ordinate of a point which divides the join of (3,2) and (3,2) internally in the ratio of 2:3?

Find the area of the triangle formed by the points A(2, 3), B(-1, -4), and C(5, -2).

Which of the following is NOT a known factor to uniquely determine a plane?