$\pi$ is a type of number known as:

The last digit of $5^n$ is . . . . . . ,where $n \in N$.

Find the $LCM(26, 91)$.

Without performing long division,state whether the decimal expansion of the rational number $\frac{13}{3125}$ is terminating or non-terminating repeating.

If $\frac{x^{3}-1}{p(x)}=\frac{x^{2}+x+1}{x-1}$,then $p(x) = \dots$

The last digit of $2^{m} \cdot 5^{n}$ (where $m, n \in N$) is . . . . . . .