<p>This Coding contains proper validation for both Range check and duplication.<br /> This is the simplest code as well as smallest code for Task 1.<br /> This is the most recommended code for Task 1.</p>

<p>My Dear,<br /> Kinldy verify the python coding for Task1 and Task 2</p>

<p>IB Computer Science Presentation which covers entire topic 3- Networks</p>