@mjeeezyy,

Javascript has the so-called **Remainder**-*operator* %

is actually a **modulo**-*operator*

and if used it will **return** the **rest-value**.

**9%3** You read it as nine modulo three is **zero**, as 9 divided by 3 has **NO rest-value**.

**22%6** You read 22 modulo six is **4**, as 22 divided by 6 will leave you with **rest-value 4**

**10%5** You read 10 nodulo five is **zero**, as 10 divided by 5 will have **NO rest-value**

Thus if you use

number%2 === 0

then you know that the number is an Even number.....

and you then use

**return true**

You can express a *Boolean* Value with **true** or **false**

https://developer.mozilla.org/en-US/docs/Glossary/Boolean

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators