# Combinatorial number + natural numbers - math problems

#### Number of problems found: 20

• Rectangles
How many rectangles with area 8713 cm2 whose sides are natural numbers are?
• Three numbers
We have three different non-zero digits. We will create all 3 digits numbers from them to use all 3 figures in each number. We add all the created numbers, and we get the sum of 1554. What were the numbers?
• Fruits
In the shop sell 4 kinds of fruits. How many ways can we buy three pieces of fruit?
• Bouquets
In the flower shop they sell roses, tulips and daffodils. How many different bouquets of 5 flowers can we made?
• Chocolates
In the market we have 3 kinds of chocolates. How many ways can we buy 14 chocolates?
There are 15 boys and 12 girls at the graduation party. Determine how many four couples can be selected.
• Research in school
For particular research in high school, four pupils are to be selected from a class with 30 pupils. Calculate the number of all possible results of the select and further calculate the number of all possible results, if it depends on the order in which th
• Ten persons
Ten persons, each person makes a hand to each person. How many hands were given?
• Honored students
Of the 25 students in the class, 10 are honored. How many ways can we choose 5 students from them, if there are to be exactly two honors between them?
• Stacks
Annie has a total of \$ 702. The money must be divided into stacks so that each buyer has the same amount of dollars. How many options she has?
• Seedbeds
The father wants to plant 2 seedbeds of carrot and 2 seedbeds of onion. Use a tree chart to find how many different options for placing the seedbeds he has.
• Bridge cards
How many bridge hands are possible containing 4 spades,6 diamonds, 1 club, and 2 hearts?
• Each with each
Five pupils from 3A class played table tennis. How many matches did they play with each other?
A license plate has 3 letters followed by 4 numbers. Repeats are not allowed for the letters, but they are for the numbers. If they are issued at random, what is the probability that the 3 letters are in alphabetical order and the 3 numbers are consecutiv
• Candy
How many ways can divide 10 identical candies to 5 children?
• Twelve flowers
A florist has roses, tulips, daffodils, and carnations to use in flower arrangements. If she were to make an arrangement using 12 flowers, how many different combinations of these 4 types of flowers would be possible?
• Tournament
How many matches will be played in a football tournament in which there are two groups of 5 teams if one match is played in groups with each other and the group winners play a match for the overall winner of the tournament?
• Cube construction
A 2×2×2 cube is to be constructed using 4 white and 4 black unit cube. How many different cubes can be constructed in this way? ( Two cubes are not different if one can be obtained by rotating the other. )
• Divide
How many different ways can three people divide 7 pears and 5 apples?
• Wagons
We have six wagons, two white, two blue, and two red. We assemble trains from them, wagons of the same color are exactly the same, so if we change only two white wagons on a train, it's still the same train, because I don't know any different. How many di

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See also our combinations calculator. Combinatorial number - math problems. Natural numbers - math problems.