The value of k for which the points A(0, 1), B(2, k) and C(4, –5) are collinear is

The value of λ for which (x² + 4x + λ) is a perfect square, is

The value of k, for which the pair of linear equations kx + y = k² and x + ky = 1 have infinitely many solutions is

The value of p for which (2p + 1), 10 and (5p + 5) are three consecutive terms of an AP is

A . –1

B . –2

C . 41

D . 2

OR

The number of terms of an AP 5, 9, 18, … 185 is

A . 31 B . 51

C . 41 D . 40

If (a, b) is the mid-point of the line segment joining the points A(10, –6) and B(k, 4) and a – 2b = 18, the value of k is