PRACTICE QUESTIONS CLASSROOM WING

If $36$ is exactly divisible by $a$, then the GCD of $36$ and $a$ is _____. 

Write whether the given number is divisible by $3$?

$168681$

Find the set of factors of $256$.

Find the $GCD$ of $156$ and $936$ using factors method.

Find the $LCM$ of $1296$ and $1728$ using factorisation method.

Find the $HCF$ of $\frac{2}{5}, \frac{12}{5},\frac{3}{4}$.

Reduce to its lowest terms. $\frac{6912}{6561}$

The HCF of two numbers is $18$ and their sum is $288$. Find the number of pairs of numbers that satisfy the given condition.