Multiplication principle - math word problems

Number of problems found: 170

  • Pairs
    pair At the table sit 10 people, 5 on one side and 5 on the other side. Among them are 3 pairs. Every pair wants to sit opposite each other. How many ways can they sit?
  • Components
    components In the box are 8 white, 4 blue and 2 red components. What is the probability that we pull one white, one blue and one red component without returning?
  • No. of divisors
    triangle_div How many different divisors have number ??
  • Toys
    toys 3 children pulled 12 different toys from a box. Many ways can be divided toys so that each children had at least one toy?
  • Hearts
    hearts_cards 5 cards are chosen from a standard deck of 52 playing cards (13 hearts) with replacement. What is the probability of choosing 5 hearts in a row?
  • Pizza
    pizza_1 A school survey found that 12 out of 15 students like pizza. If 6 students are chosen at random, what is the probability that all 6 students like pizza?
  • Events
    items Event P has probability of 0.84. What is the probability that the event P occurs in 3, 5, 7 try.
  • 7 heroes
    7statocnych 9 heroes galloping on 9 horses behind. How many ways can sort them behind?
  • Hockey
    hokej Hockey match ended 8:2. How many different matches could be?
  • Subsets
    1venna_sets How many are all subsets of set ??
  • Word
    words What is the probability that a random word composed of chars E, Y, G, E, R, O, M, T will be the GEOMETRY?
  • Rectangles
    rectangles How many rectangles with area 8713 cm2 whose sides is natural numbers are?
  • Flags
    vlajka_cz How many different flags can be made from colors red, yellow, blue, green, white so that each flag consisted of three different colors?
  • Orchard
    orchard 10 trees in 5 lines grows in the orchard. How many trees are in the orchard?
  • Bits, bytes
    bits Calculate how many different numbers can be encoded in 16-bit binary word?
  • Morse alphabet
    morse_code Calculate how many words of Morse code to create compiling dashes and dots in the words of one to four characters.
  • Guests
    hostia How many ways can 7 guests sit down on 8 seats standing in a row?
  • Football league
    football In the 5th football league is 10 teams. How many ways can be filled first, second and third place?
  • 2nd class combinations
    color_circle From how many elements you can create 4560 combinations of the second class?
  • 2nd class variations
    cards From how many elements you can create 2450 variations of the second class?

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...