Source: https://www.w3resource.com/python-exercises/numpy/numpy_100_exercises_with_solutions.php
Exercise 1:
Create a 1D array with values ranging from 0 to 9.
Exercise 2:
Convert a 1D array to a 2D array with 2 rows.
Exercise 3:
Multiply a 5x3 matrix by a 3x2 matrix.
Exercise 4:
Extract all odd numbers from an array of 1-10.