Question

What are common multiples and their applications?

Answer 1

The common multiples and their applications.

Common Multiple of two whole numbers is a number that is a multiple of both numbers.

Example: Consider $30$and $45$.

$$\begin{gathered} 30=30,60,90,120,150,180,210,240,270\dots .. \\ 45=45,90,135,190,225,270\dots \dots \dots . \end{gathered}$$

First two Common multiple of $30$and $45$ are $90\mathrm{and}270$.

Application of Common Multiple are:

• To find Lowest Common Multiple (LCM)
• In Computer science, the LCM of numbers encoded and decode messages using cryptography.