MCQ
===

This year, a compulsary MCQ will be taken by every student the lesson following
the deadline of each project. The objective is simply to detect any form of
plagiarism (copy the code of someone else, ask someone else to do your project,
or even ChatGPT). Therefore, the MCQ should be very simple for anyone who has
done the project. Some questions will be about the concepts seen in the
project, but some questions could also be of the kind "Was there a challenge
where you had to do X?".

Date
----

The MCQ for the first project will be held Wednesday, 9th April 2025 during the
lesson. The exact time and duration will be announced later.

Quotation system
----------------

Questions generally have between 3 and 5 propositions. The number of correct
propositions can vary from 1 to the total number of propositions - 1. You can
choose to select any number of propositions for each question.

For each **proposition** that you select, you will get a number of points
(positive or negative). For each **proposition** that you do not select, you
will get 0 points.

The number of points you get is computed as follows:

- If you select a correct proposition, you get 1 point divided by the total
  number of **correct** propositions of the question.

- If you select an incorrect proposition, you get -1 point divided by the total
  number of **incorrect** propositions of the question.

Examples
^^^^^^^^

- What is the capital of France?

  - Paris
  - London
  - Berlin
  - Madrid

  There is only one correct proposition (Paris) and 3 incorrect propositions.

  Someone choosing **"Paris"** and **"London"** would get
  0.66 points for this question:

  - Paris selected and correct |:white_check_mark:| -> +1/1
  - London selected and incorrect |:x:| -> -1/3
  - Berlin not selected |:white_circle:| -> +0
  - Madrid not selected |:white_circle:| -> +0

- Which of these is/are prodigious computer scientist(s)?

  - Alan Turing
  - Isaac Newton
  - Elon Musk
  - Laurent Mathy

  The correct answers are obviously **"Alan Turing"** and **"Laurent Mathy"**.

  Someone choosing **"Isaac Newton"** and **"Elon Musk"** would get -1 point
  for this question since these are the incorrect propositions -> -1/2 - 1/2 =
  -1.

  Choosing **"Laurent Mathy"** would get 0.5 point for this question since this
  is one of the two correct propositions -> +1/2.


.. tip:: Last year, the same quotation system was used for the MCQ before the
   exam. Some students tended to not answer the questions they were not sure
   about. This is not **necessarily** a good strategy since the expected value of
   answering at random is not negative (it is 0).