By using the fact $g.c.d. (a, b) \times l.c.m. (a, b) = a \times b$,find $l.c.m. (26, 91)$.

$\sqrt{12}$ and ........ are like surds.

Euclid's division lemma states that for two positive integers $a$ and $b,$ there exist unique integers $q$ and $r$ such that $a = bq + r,$ where $r$ must satisfy

"The product of two consecutive positive integers is divisible by $2$." Is this statement true or false? Give reasons.

$\frac{p}{q}$ is a rational number and for non-negative integers $m$ and $n$,$q = 2^{m} 5^{n}$ if and only if the decimal form of $\frac{p}{q}$ is $\ldots \ldots \ldots \ldots$

The smallest positive number divisible by every integer from $2$ to $6$ is..........