Title: Child category
Course: Backup and restore test course

Child of test category 1

Write a Python3 function sqr(n) that returns the square of its numeric parameter n.

For those who don't know Python, one possible answer is:

def sqr(n):
    return n * n

Copy that answer into the answer box and click Check to see how CodeRunner questions behave. Then try changing the answer in various ways and re-checking.