Multiplication principle + variations - math problems

Number of problems found: 88

  • Variations
    pantagram Determine the number of items when the count of variations of fourth class without repeating is 42 times larger than the count of variations of third class without repetition.
  • 2nd class variations
    cards From how many elements you can create 2450 variations of the second class?
  • Seven
    post_1 Seven friends agree to send everyone a holiday card. How many postcards were sent?
  • Medals
    medails In how many ways can be divided gold, silver and bronze medal among 21 contestant?
  • Pins 2
    pin_keyboard how many different possible 4 digits pins can be found on the 10-digit keypad?
  • Task of the year
    years Determine the number of integers from 1 to 106 with ending four digits 2015.
  • Possible combinations - word
    dices2 How many ways can the letters F, A, I, R be arranged?
  • Combinatorics
    fontains The city has 7 fountains. Works only 6. How many options are there that can squirt ?
  • 7 heroes
    7statocnych 9 heroes galloping on 9 horses behind. How many ways can sort them behind?
  • Disco
    vencek On the disco goes 12 boys and 15 girls. In how many ways can we select four dancing couples?
  • Cars plates
    car_plate How many different licence plates can country have, given that they use 3 letters followed by 3 digits?
  • Bits, bytes
    bits Calculate how many different numbers can be encoded in 16-bit binary word?
  • One three
    dice We throw two dice. What is the probability that max one three falls?
  • Tournament
    zapisnik_2 Six teams entered the basketball tournament. How many matches will be played if each team has to play one match with each other?
  • Olympics metals
    olympics In how many ways can be win six athletes medal positions in the Olympics? Metal color matters.
  • Vans
    shuttlevan In how many ways can 9 shuttle vans line up at the airport?
  • Seating
    kupe_1 How many ways can 6 people sit on 6 numbered chairs (e. g. , seat reservation on the train)?
  • Six on dice
    dices2_1 What is the probability that when throwing two dice will fall at least one six?
  • 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?
  • Subsets
    1venna_sets How many are all subsets of set ??

Do you have an interesting mathematical word problem that you can't solve it? Submit a math problem, and we can try to solve it.

We will send a solution to your e-mail address. Solved examples are also published here. Please enter the e-mail correctly and check whether you don't have a full mailbox.

Please do not submit problems from current active competitions such as Mathematical Olympiad, correspondence seminars etc...

See also our variations calculator. Multiplication principle - math word problems. Variations - math word problems.