function Student(name, id) {
  this.name=name;
  this.id=id;
}

var st = new Student('Mani', 126);
Student.prototype.class = 5;

var MyNumber = {
  getTypeOfNumber : function(number){
    var type = (number % 2 === 0) ? "Even" : "Odd"; return type;
  },
  getTypeOfAllNumber : function (){
    var result = [],
        i=0;
    
    for (; i < arguments.length; i++){
      var type = MyNumber.getTypeOfNumber.call(null,arguments[i]);
      result.push(type);
    }
    return result;
  }
};

var typeOfNumber = MyNumber.getTypeOfNumber.call(null,21); 
console.log(typeOfNumber);

var typeOfAllNumber = MyNumber.getTypeOfAllNumber.apply(null,[2,4,5,78,21]);
console.log(typeOfAllNumber);