Natural numbers - math word problems - page 69 of 91

Number of problems found: 1809

Four-digit numbers
How many four-digit numbers can we make from the numbers 2, 6, 3, 5, 1, and 9 if we cannot repeat the numbers in the number?
Pages counting
There are pages numbered 2 to 104 in the book. How many digits have to be printed to number the pages?
Simultaneously 35163
One vending machine closes 60 jars per minute, and the other 20 bottles close less simultaneously. If both machines are put into operation simultaneously, in how many minutes will they close 900 bottles?
Repetition 80362
How many six-digit numbers without repetition can be formed from the digits 1, 2, 3, 4, 5, and 6, if the numbers are, to begin with: a) the digit 4; b) digits 4 or 5?
Repeated 38103
How many 5-digit numbers can we assemble from the numbers 2,3,4,5,6,7,8,9 if each digit can be repeated only once?
Committee 35431
There are 24 students in the class. How many ways can we select a class committee? Where are the chairman, treasurer, and bulletin board?
Participants 33551
How many ways could the four participants in the finals of the Peťo, Juro, Martin, and Števo sports competition take the first three places? Write each option.
Combinations 29311
We have seven players and have to form a 5-member team where 6 and 7 players cannot play together. How many possible combinations can the coach make? Please explain.
ID tag
How many three-digit ID-tag can be made if: a) a digit cannot be used more than once b) the 1st digit must be five, and repetition of the others is not permitted.
Number 4
Kamila wrote all-natural numbers from 1 to 400 inclusive. How many times did she write the number 4?
Natural numbers
How many natural numbers can we create less than 301 from the number 0,1,2,3,6,7?
Two-digit 62944
Find the number of all two-digit numbers created from digits 1, 2, 3, 4, and 5 that are greater than 24. We can repeat numerals.
Adela number
Adela had two numbers written on the paper. When she added their greatest common divisor and least common multiple, she was given four different numbers less than 100. She was amazed that if she divided the largest of these four numbers by the least, she
Gertrude 62304
Six boys and six girls (among them Emil, Félix, Gertrude, and Hanka) want to dance. The number of ways they can make six (mixed) couples if Emil does not want to dance with Gertrude and Hanka wants to dance with Felix is?
Different 45881
Silvia wants to buy a new T-shirt, skirt, and pants. The boutique has ten different T-shirts, a white and black skirt, and six types of trousers. How many different clothing options can you buy?
Contained 45451
How many natural numbers can you make from the digits contained in the number 4002? No digit may be repeated in the number entry. However, not all digits must be used. Sort the numbers in ascending order of size.
Travelogues 45401
Martina borrowed three novels and two travelogues from the library. He will read the travelogues first. How many ways can he read the books?
Probability 8280
We have ten white, ten red, and ten blue balls in our pockets. We selected five white, two red, and three blue balls. What is the probability that we will pick a white ball in the next move?
Clock's gears
In the clock machine, three gears fit together. The largest has 168 teeth, the middle 90 teeth, and the smallest 48 teeth. The middle wheel turns around its axis in 90 seconds. How many times during the day do all the gears meet in the starting position?
You have
You have four reindeer and want to have 3 fly your sleigh. You always have your reindeer fly in a single-file line. How many different ways can you arrange your reindeer?

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