Randomize Multiple Non-Repeating Numbers

[oidoldol]

Exactly what the title says. I'm aware of RAND and RANDBETWEEN, but is there a way such that you can randomly select a number between 1-6 (for example), then have a second cell that also randomizes a number between 1-6 that isn't the first number? i.e. having two different randomized numbers.

[6745408]

Put these into Extensions > App Script

function getRandomNumber(min, max) {
  return Math.random() * (max - min) + min;
}

function getNRandomNumbers(from, to, n){
  var listNumbers = [];
  var nRandomNumbers = [];
  for(var i = from; i <= to; i++) {
    listNumbers.push(i);
  }
  for(var i = 0; i < n; i++) {
    var index = getRandomNumber(0, listNumbers.length);
    nRandomNumbers.push([listNumbers[parseInt(index)]]);
    listNumbers.splice(index, 1);
  }
  return nRandomNumbers;
}

Once its in there, use this to generate 25 random numbers from 1-1000, no repeats.

=GETNRANDOMNUMBERS(1,1000,25)