Variations - examples

See also our variations calculator.

  1. 7 heroes
    7statocnych 5 heroes galloping on 5 horses behind. How many ways can sort them behind?
  2. Vans
    shuttlevan In how many ways can 7 shuttle vans line up at the airport?
  3. Flags
    vlajka_cz How many different flags can be made from colors red, white, blue, black, yellow, green, purple, gray, orange so that each flag consisted of three different colors?
  4. Seating
    kupe_1 How many ways can 7 people sit on 3 numbered chairs (eg seat reservation on the train)?
  5. Football league
    football In the 2nd football league is 19 teams. How many ways can be filled first, second and third place?
  6. Guests
    hostia How many ways can 7 guests sit down on 9 seats standing in a row?
  7. Medals
    medails In how many ways can be divided gold, silver and bronze medal among 18 contestant?
  8. 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.
  9. Coin and die
    die Flip a coin and then roll a six-sided die. How many possible combinations are there?
  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. Area codes
    us_codes How many 6 digit area codes are possible if the first number can't be zero?
  12. 2nd class variations
    cards From how many elements you can create 6480 variations of the second class?
  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. Three digits number
    plot How many are three-digit integers such that in they no digit repeats?
  15. Lock
    combination-lock Combination lock will open when the right choice of 5 numbers (from 1 to 12 inclusive) is selected. A. How many different lock combinations are possible? B. Is he combination lock named appropriately?
  16. Morse alphabet
    morse_code Calculate how many words of Morse code to create compiling commas and dots in the words of one to five characters.
  17. No. of divisors
    triangle_div How many different divisors has number ??
  18. Three digits number
    3digit From the numbers 1, 2, 3, 4, 5 create three-digit numbers that digits not repeat and number is divisible by 2. How many numbers are there?
  19. 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.
  20. Neighborhood
    glasses_1 I have 7 cups: 1 2 3 4 5 6 7. How many opportunities of standings cups are there if 1 and 2 are always neighborhood?

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