**Tell us what’s happening:**

Dear All,

Good afternoons,

I have a question about the following function:

I do understand the usage of Math.floor and Math.random but i don´t understand this part specifically:

(ourMax - ourMin + 1 ) + ourMin;

i know the ranges are ourMax and ourMin but what does the + 1 means ? and why we add a + ourMin?

I will appreciate and thank you all so much all the advises and orientation you can provide,

thank you all in advance for your kind reply,

Regards,

Ivonne

**Your code so far**

```
// Example
function ourRandomRange(ourMin, ourMax) {
return Math.floor(Math.random() * (ourMax - ourMin + 1)) + ourMin;
}
ourRandomRange(1, 9);
// Only change code below this line.
function randomRange(myMin, myMax) {
return Math.floor(Math.random() * (myMax - myMin + 1 )) + myMin
}
// Change these values to test your function
var myRandom = randomRange(5, 15);
```

**Your browser information:**

User Agent is: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36`

.

**Challenge:** Generate Random Whole Numbers within a Range

**Link to the challenge:**

https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-javascript/generate-random-whole-numbers-within-a-range