#  lucky 7 quiz answers

Show a number on the BBC micro:bit. #LED #screen #show #math #docs #input

This is the answer key for the [lucky 7 quiz](/microbit/lessons/lucky-7/quiz).

## 1. Describe what `basic->show number` does?

Answers may vary. This will show a number on the LED screen, one digit at a time (scrolling from left to right).

## 2. Draw every LED that is ON after running this code

```
basic.showNumber(7, 150)
```

<br/>

![](/static/mb/lessons/lucky-7-0.png)

## 3. Draw every LED that is ON after running this code

```
basic.showNumber(21, 150)
```

![](/static/mb/lessons/lucky-7-1.png)

## 4. Write the code that will be used to display the number 3 on the BBC micro:bit.

![](/static/mb/lessons/lucky-7-2.png)

<br/>

```
basic.showNumber(3, 150)
```