text: const arr1 = [5, 10, 15, 20];
  const arr2 = [15, 88, 1, 5, 7];
  const arr3 = [1, 10, 15, 5, 20];
  
  const intersection = (...args) => {
      if(Array.isArray(...args) === false) return null;
  
      // compare each
     return args.reduce((t, e) =>  [t + e])
  
     
    }
  
    console.log(intersection(arr1, arr2, arr3));
    
    