Making the right choice is about knowledge and experience. Maybe you want to be able to read a number from 1 to 25 from the matrix without having to have it scroll when in the two digit range.If I offered you ten dollars to roll a six in a game of dice or USD 10 million to avoid the bullet in a game of Russian roulette – which would you choose? The dice game of course! Because even though the winnings are vastly greater in Russian roulette, the stakes are also immense - you risk paying with your life.

Use the display logic for some other purpose.

The quickest fix for that is to make the program get the total from two random dice, There is only one way to make 12 and there are 6 ways to make a total of 7. Over time, the random number generator generates numbers that are distributed evenly across the range. This will make between 2 and 12 dots on the screen each time.

Extending the logic of the previous program, we might foolishly do this, The highest we can roll is a double 6, making a total of 12. The lowest we can roll is double 1, making a total of 2. Rolling two dice, and adding them together, we get a number from 2 to 12. The loops then plots as many pixels on the matrix as the number on the die. So we generate a number from 0-5 and then add one. We don't get a choice about the bottom range of the random numbers. Here is one way to do that whenever the user pressed the A button. On one of the previous pages, you might have been making a program to turn the micro:bit into a die that you could 'roll' by shaking the micro:bit.

Bit dice