Question

Write all the numbers less than 90 which are common multiples of $5$ and $6$.

Answer 1

Finding common multiples of $5$ and $6$ less than $90$

Multiples of $5$ are $5,10,15,20,25,30,35,40,45,50,55,60\dots$

Multiples of $6$ are $6,12,18,24,30,36,42,48,54,60\dots$

Hence, the common multiples of $5$ and $6$ less than $90$ will be $30,$ and $60$.

Note: Whenever we will find common multiples, first find the common multiple then do start writing the table of the first common multiple.

Example: First Common multiple of $5$ and $6$ is $30$. Now we start writing the table of $30$ to find the more and more common multiples such as $30,60,90$ and so on.