The rationalising factor of $5 \sqrt{2}$ is ..............

Prove that the number $\sqrt{5}+1$ is irrational.

$L.C.M.(115, 25) = \ldots$

$2.031 \overline{2}$ is ............

Which of the following is Bezout's identity?

According to Euclid's division lemma,for given positive integers $a$ and $7$,there exist unique non-negative integers $q$ and $r$ such that $a = 7q + r$; where..........