Multiplication principle + reason - practice problems
Number of problems found: 144
- Wallpapers 69424
Lucia's mobile phone offers a choice of 10 ringtones, seven tones when receiving an SMS, and 15 wallpapers in the background of the display. How many ways can Lucia set up her mobile?
- Triples 67394
How many triples of sounds can be created from sounds f, o, u, r? You solve using a tree diagram.
- Film premiere
How can you distribute 40 cinema tickets to 15 people?
- Students 62184
There are 16 students in the class. How many options does the teacher have if she wants to choose two of the students who will be weekly?
- Spouses 61294
Ten married couples board the train, which has five cars. How many ways can they take if no two spouses want to be in the exact vehicle?
- Even five-digit
How many even five-digit natural numbers with different digits can be created from the digits 0 - 6?
- Tv dinner tray
I'm trying to calculate total possible unique potential combinations, but I'm trying to solve for a tv dinner tray with 4 little sections for one each of: meat, veggie, starch, dessert. What makes this more complex is we have different types of meats/vegg
- Probability 59073
A group of n people, including Jano and Fero, randomly line up. What probability will there be exactly r people (r
- Round table
Find the number of ways in which 8 people can be seated at a round table, such that 2 of them always sit together.
- Balls in row
Calculate the number of ways of placing 4 black balls, 4 turquoise balls and 5 gold balls in a row.
- Different 57811
How many different 6-member teams can be made up of seven boys and four girls if there are two or four girls in the team?
- The three
The three boys Adam, Boris and Cyril are to be taken on a two-seater ski lift. How many different removal options are there? What would it be like if four boys or five were to be taken away?
- Three towns and roads
If there are three roads from town A to town B And four roads from town B to town C, how many ways can one go from town A to town C and back to town A, through town B, without passing through the same road twice?
- Hockey Championships
At the 2021 World Hockey Championships, there are eight teams in Group A, each of which plays seven matches. There are 4 points for each team to gain points (3-2-1-0), but it is always paired with the opponent's points ( 0-1-2-3). How many points are ther
- Indistinguishable 48981
How many ways can we build eight indistinguishable towers on an 8 × 8 board so that they don't endanger each other?
- A married
A married couple planned to have 3 children. i. List the possible combinations of the sexes of 3 children. Use B for boy and G for girl. ii. Calculate the probability that all three children would be of the same gender
- Three wagons
I have 6 different people (A, B, C, D, E, F), which I have to place into 3 wagons, if it depends on who will board. How many options are there?
- A bag
A bag contains 9 blue marbles and 1 green marble. What is the probability of drawing a blue marble followed by a green marble, without replacing the first marble before drawing the second marble.
- We roll
We roll two dice A. - what is the probability that the sum of the falling numbers is at most 4 B. - is at least 10 C. - is divisible by 5?
- Two dice
We roll two dice. What is the probability that the sum of the falling numbers is greater than 3?
Multiplication principle - practice problems. Reason - practice problems.