const int ledPin1 = 2;
const int ledPin2 = 3;
const int ledPin3 = 4;
const int ledPin4 = 5;
long randNumber;
void setup() {
  Serial.begin(9600);
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);
  randomSeed(analogRead(0));
  randNumber = random(1, 5); 
  Serial.println(randNumber);
if (randNumber == 1){
  digitalWrite(2, HIGH);
  delay(750);
  digitalWrite(2, LOW);
}
if (randNumber == 2){
  digitalWrite(3, HIGH);
  delay(750);
  digitalWrite(3, LOW);
}
if (randNumber == 3){
  digitalWrite(4, HIGH);
  delay(750);
  digitalWrite(4, LOW);
}
if (randNumber == 4){
  digitalWrite(5, HIGH);
  delay(750);
  digitalWrite(5, LOW);
}
}

void loop() {

}