$(1)$ Create a function that accepts any three numbers and prints their mean and median.

$(2)$ Create a function that finds the midpoint between any two points in $R^2,$ that is in the $xy-$plane.

$(3)$ A Fibonacci Sequence is one whose first number is some integer, the second number is that same

value, and all subsequent numbers are created by adding the previous two numbers. Create a

function that returns the first five numbers in a Fibonacci sequence starting at any user determined

integer.

$(4)$ Using lambda abstraction$,$ create a function with a single input $n$ and whose output is a function

that takes a number $x$ and outputs $x+n.$ Then use this function to define new two new functions:

one that adds by $1$ and another that subtracts by $1.$