var person = {
    fullName: function() {
        return this.firstName + " " + this.lastName;
    }
}
var person1 = {
    firstName: "Mary",
    lastName: "Doe",
}
person.fullName.apply(person1);  // Will return "Mary Doe" 

var person = {
    fullName: function(city, country) {
        return this.firstName + " " + this.lastName + "," + city + "," + country;
    }
}
var person1 = {
    firstName:"John",
    lastName: "Doe",
}
person.fullName.apply(person1, ["Oslo", "Norway"]);

var person = {
    fullName: function(city, country) {
        return this.firstName + " " + this.lastName + "," + city + "," + country;
    }
}
var person1 = {
    firstName:"John",
    lastName: "Doe",
}
person.fullName.call(person1, "Oslo", "Norway");

 Math.max(1,2,3);  // Will return 3 

 Math.max.apply(null, [1,2,3]); // Will also return 3 

 Math.max.apply(Math, [1,2,3]); // Will also return 3 

 Math.max.apply(" ", [1,2,3]); // Will also return 3 

 Math.max.apply(0, [1,2,3]); // Will also return 3