How do you plan to solve it?
 
 
/*Paste your code here*/
int switch1 = 2;
int switch2 = 3;
int ledAND = 4;
int ledOR  = 5;
int ledNAND = 6;
int ledNOR  = 7;
void setup() {
  pinMode(switch1, INPUT);
  pinMode(switch2, INPUT);
  pinMode(ledAND, OUTPUT);
  pinMode(ledOR, OUTPUT);
  pinMode(ledNAND, OUTPUT);
  pinMode(ledNOR, OUTPUT);
}
void loop() {
  int A = digitalRead(switch1);
  int B = digitalRead(switch2);
  int AND_result = A && B;
  int OR_result  = A || B;
  int NAND_result = !(A && B);
  int NOR_result  = !(A || B);
  digitalWrite(ledAND, AND_result);
  digitalWrite(ledOR, OR_result);
  digitalWrite(ledNAND, NAND_result);
  digitalWrite(ledNOR, NOR_result);
}
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