BUZZO

Grade 11 · Algebra

Algebra quiz for grade 11: Combinatorics and probability

This quiz helps revise “Combinatorics and probability” in Algebra for grade 11. It has 25 questions in five categories: Counting principle, Permutations, Combinations, Basic probability, Events and trials. Questions get harder as the points go up, from 100 to 500.

  • For ages 16–17
  • 25 questions · 5 categories

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Buzzo quiz: Combinatorics and probability

A peek at the questions

The 100- and 200-point questions are open here. The rest show only their first words, and there are no answers: all of that is in the game itself.

Counting principle

  1. 100Picture for the question

    There are 2 shirts and 3 pairs of trousers. How many outfits can be made by choosing one of each?

  2. 200Picture for the question

    There are 3 starters and 4 main courses. How many meals can be made by choosing one of each?

  3. 300

    A café offers 5…

    In the game
  4. 400

    A code has one…

    In the game
  5. 500

    How many three-digit even…

    In the game

Permutations

  1. 100Picture for the question

    In how many orders can 4 different books be arranged on a shelf?

  2. 200

    In how many ways can 5 students line up?

  3. 300

    In how many ways…

    In the game
  4. 400

    How many distinct rows…

    In the game
  5. 500

    In how many ways…

    In the game

Combinations

  1. 100

    How many ways can 2 students be chosen from 5 if order does not matter?

  2. 200

    How many ways can 3 books be chosen from 8 different books?

  3. 300

    How many committees of…

    In the game
  4. 400

    There are 8 novels…

    In the game
  5. 500

    From 6 girls and…

    In the game

Basic probability

  1. 100Picture for the question

    A fair coin is tossed once. What is the probability of heads?

  2. 200

    A fair six-sided die is rolled once. What is the probability of getting a number greater than 4?

  3. 300

    Two fair six-sided dice…

    In the game
  4. 400

    One card is drawn…

    In the game
  5. 500

    A bag has 5…

    In the game

Events and trials

  1. 100

    Event A has probability 0.3. What is the probability of its complement?

  2. 200

    Events A and B are independent: P(A)=0.5 and P(B)=0.4. What is the probability that both occur?

  3. 300

    Events A and B…

    In the game
  4. 400

    A fair die roll…

    In the game
  5. 500

    A fair coin is…

    In the game

Play this quiz

All 25 questions and the answers are in the game. Invite your class or friends with a link — guests need no account.

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How it works

  1. Pick a quiz and press “Play”.
  2. Send students or friends the link — they join from a phone or a computer.
  3. Choose questions on the board, buzz in first and collect points.

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