Factorial - examples

  1. Elements
    fact_1 If the number of elements is decreased by two the number of permutations is decreased 30 times. How many elements are?
  2. Vans
    shuttlevan In how many ways can 7 shuttle vans line up at the airport?
  3. Seating
    kupe_1 How many ways can 7 people sit on 3 numbered chairs (eg seat reservation on the train)?
  4. Guests
    hostia How many ways can 7 guests sit down on 9 seats standing in a row?
  5. Playing cards
    playing_cards How many possible ways are to shuffle 7 playing cards?
  6. Shelf
    bookshelf.JPG How many ways are there to arrange 9 books on a shelf?
  7. Elections
    gaspar_billboard In elections candidate 8 political parties. Calculate how many possible ways can the elections finish, if any two parties will not get the same number of votes.
  8. Word
    words What is the probability that a random word composed of chars T, I, O, D, I will be IDIOT?
  9. Tournament
    turnaj Determine how many ways can be chosen four representatives from 27 students to school tournament.
  10. Numbers
    numbers_3 How many different 4 digit natural numbers in which no digit is repeated, can be composed from digits 0,1,2,3?
  11. Committees
    globe How many different committees of 2 people can be formed from a class of 29 students?
  12. Commitee
    committees A class consists of 5 males and 18 females. How many committees of 4 are possible if the committee must consist of 3 males and 1 females?
  13. Friends in cinema
    cinema_1 5 friends went to the cinema. How many possible ways can sit in a row, if one of them wants to sit in the middle and the remaining's place does not matter?
  14. Candy
    bulls How many ways can divide 22 identical candies to 4 children?
  15. MATES
    sazka In MATES (Small Television tipping) from 35 randomly numbers drawn 5 winning numbers. How many possible combinations there is?
  16. Words
    words How many 3 letter "words" are possible using 18 letters of the alphabet? a) n - without repetition b) m - with repetition
  17. Olympics
    olimpiada-medaliile In how many ways can be placed 6 athletes on the podium at the Olympics? Depend on the color of the metal.
  18. Colors
    peracnik Francisco got birthday 4 colour pens in different colors. How many ways he can give them side by side in pencil?
  19. Cards
    sedmove karty How many ways can give away 32 playing cards to 3 player?
  20. Cinema
    stale_kvoka How many ways can be divided 13 free tickets to the premiere of "Jáchyme throw it in the machine" between 10 pensioners?

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