IB Diploma · Mathematics Aa

Permutations and combinations

15 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 15 questions

  1. In how many ways can a committee of be chosen from people?
  2. In how many ways can a committee of be chosen from people?
  3. In how many ways can a committee of be chosen from people?
  4. In how many ways can a committee of be chosen from people?
  5. How many four-digit positive integers (no leading zero) have four distinct digits and are even?
  6. In how many ways can a committee of be chosen from people?
  7. In how many ways can a committee of be chosen from people?
  8. How many different arrangements of distinct books are possible on a shelf?
  9. How many different arrangements of distinct books are possible on a shelf?
  10. How many different arrangements of distinct books are possible on a shelf?
  11. In how many ways can a committee of be chosen from people?
  12. In how many ways can a committee of be chosen from people?
  13. In how many ways can a committee of be chosen from people?
  14. In how many ways can a committee of be chosen from people?
  15. How many different arrangements of distinct books are possible on a shelf?

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