# 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/>  ## 3. Draw every LED that is ON after running this code ``` basic.showNumber(21, 150) ```  ## 4. Write the code that will be used to display the number 3 on the BBC micro:bit.  <br/> ``` basic.showNumber(3, 150) ```