cos⁻¹(-1) equals:

If sin⁻¹x + cos⁻¹x = ?

If A = [[1,2],[3,4]] and B = [[2,0],[1,2]], then A + B is:

The order of a matrix having 3 rows and 4 columns is:

If A is a square matrix of order 2, then |kA| = ?

The multiplicative identity matrix of order 2 is:

If A = [[1,2],[3,4]], then det(A) = ?

Which of the following organisms reproduce only by asexual reproduction?

The lifespan of an organism is:

In bryophytes and pteridophytes, the dominant phase is:

Which of the following is NOT a mode of asexual reproduction?