Try it on paper first. A hint, the key idea and the worked solution are here when you need them.
Find the total and the average of the marks , , , and .
average = sum divided by len.
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, compare your working with the solution.
Plan. sum() adds them. The average is the sum divided by the number of items, len().
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