The number of terms in the expansion of general determinant of order $$n$$ is

If $$A$$ is any $$nxn$$ matrix and $$k$$ is a scalar then $$\left| {kA} \right| = \alpha \left| A \right|$$ where $$\alpha $$ is

Temporary hardness in water is caused by the presence of

Principle involved in the relationship between submerged unit weight and saturated weight of a soil is based on