1. define a function with one parameter and no return value. Add code to print out the value of the parameter. Write a line of code to call your function 2. define a function with two parameters where one of them has a default value of zero - you should be able to work out which of the parameters this can be. The function should return a value equal to the first parameter minus the second parameter. Write a line of code to call your function 3. define a function that takes one parameter that is assumed to be a tuple with 2 elements. The function should return a tuple where the order of the two elements is switched. Write a line of code to call your function.

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