How would I simplify this?

Projects Programming
2 
void LED() {
  int num = random(1,9); //generate random number
  for (int i=2; i<num+1; i++)
    digitalWrite(i, HIGH);
  delay(time);
  for (int i=2; i<=10; i++)
    digitalWrite(i, LOW);

If your pins are not consecutive:

  for (int i=0; i<num; i++)
    digitalWrite(pinArray[i], HIGH);
  delay(time);
  for (int i=0; i<8; i++)
    digitalWrite(pinArray[i], LOW);