Matlab uses rand and integer functions to simulate the numbers on each side of the dice.

First, the number on the dice is from 1 to 6. The random number generated by rand is greater than 0 and less than 1, so it can be constructed as follows

1+(6-1) * rand (1) and then round. Here, it is suggested round rounding the whole number, which should be a random number generated by rand.

A = round (1+5 * rand (1)) will satisfy uniform distribution.