pxt-calliope/olddocs/lessons/lucky-7/quiz-answers.md

#  lucky 7 blocks quiz answers

Show a number on the micro:bit. 

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

## 1. Describe what `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

```blocks
basic.showNumber(7)
```


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

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


```blocks
basic.showNumber(21)
```

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

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

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

```blocks
basic.showNumber(3)
```