Combinatorics - math word problems - page 31 of 51
Combinatorics is a part of mathematics that investigates the questions of existence, creation and enumeration (determining the number) of configurations.It deals with two basic tasks:
How many ways can we select certain objects
How many ways can we arrange certain objects
Number of problems found: 1005
- Number 4
Kamila wrote all-natural numbers from 1 to 400 inclusive. How many times did she write the number 4? - One three
We throw two dice. What is the probability that number three falls maximally once? - Tricolors
From the colors - red, blue, green, black, and white, create all possible tricolors. - Basketball
Peter and Franta threw to the basket. Each had 20 attempts. Peter scored thirteen and twelve Franta. Give them a percentage of success.
- travel agency
A small travel agency offers five different tours on honeymoon. What is the probability that the bride and groom choose the same tour (they choose independently)? - Modifications 7479
The Numerometer has invented as the number machine that changes numbers until it makes them single-digit numbers. He still makes the change according to the same rule. For example: from the number 87312, after six modifications, he gradually made the numb - Probability 71164
We roll the dice twice. What is the probability that if an even number falls for the first time, the even number will fall a second time? - Triples 67394
How many triples of sounds can be created from sounds f, o, u, r? You solve using a tree diagram. - Five-digit 66894
Create all five-digit numbers in ascending order from three, four, and two zeros.
- Different 65344
Marian obtained two different marks in one day. How many ways these marks can he get? - Different 38123
How many ways can we put seven different books on the shelf? - 6-digit 35541
How many 6-digit numbers can be created from the number 1,2,3,4,5,6 if we must not repeat the numbers? - Representative 8328
How many ways can a commander and a representative of a 20-member group be elected? - Boy-girl 6766
How many boy-girl pairs can we create from a class of 15 boys and 16 girls?
- Gold, silver, bronze
How many ways can we divide gold, silver, and bronze medals if six people compete? - Word MATEMATIKA
How many words can be created from the phrase MATEMATIKA by changing the letters' order, regardless of whether the words are meaningful? - Olympics
How many ways can six athletes be placed on the podium at the Olympics? Depend on the color of the metal. - Chess
How many different ways can you initiate a game of chess (first pass)? - Groups 72194
I have eight groups. How could they place first, second, and third?
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