pxt-calliope/docs/reference/js/lessons/lucky-7/quiz.md

#  lucky 7 quiz

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

## Name

## Directions

Use this activity document to guide your work in the [lucky 7 tutorial](/microbit/lessons/lucky-7/tutorial).

Answer the questions while completing the tutorial. Pay attention to the dialogues!

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

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

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

![](/static/mb/empty-microbit.png)

<br/>

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

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

![](/static/mb/lessons/answering-machine-4.png)

<br/>

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

![](/static/mb/lessons/lucky-7-3.png)

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