The number of arguments does not need to match the number in the parameter list when you use . 19. When can a method be called with less arguments than exist in the parameter list for the method

Only when the default parameter are defined in the function

Explanation:

Answer is same for both the question.

A default argument or default parameter is assigned an automatic value when the function is invoked. So the default value will be assigned during the function definition itself. You can find the assignment operator which is being used in the function definition.You can overwrite the default values by passing your own value in the calling portionThe constraint here is that, the default parameter should always be the last parameter of function definition to avoid ambiguity.