Multiplication + reason - practice problems - page 15 of 18
Number of problems found: 360
- Digits of age
The product of the digits of Andrew's age six years ago is the same and not equal to 0. Andrew's age is also the youngest possible age with these two conditions. After how many years will the product of the digits of Andrew's age again be the same as toda
- Cinema 5
James wants to go to the movies every Tuesday for five years. After a year, he learned that the ticket price on Wednesday was only € 5.10 and € 5.60 the other day. Now that he knows about the discount, he decided to change his habits and go to the cinema
- Four classses
Students of all 7, 8, and 9 classes in one school may take up 4, 5, 6, and 7 abreast, and nobody will be left. If there are always four classes in each grade, what is the average number of pupils in one class?
- Combinations of sweaters
I have four sweaters: two white, one red, and one green. How many ways can you sort them out?
- Left-handed 2571
Eva, Lucia, Barbora, Ivana, and Slávka are good friends, so they always want to sit at one long table next to each other in biology class. How many ways can they sit if Slavka is left-handed and, therefore, always wants to sit on the left side of the tabl
- Dices throws
What is the probability that the two throws of the dice: a) Six falls even once b) Six will fall at least once
- Throw
We throw two times with two dice. What is the probability that the first roll will fall more than the sum of 9 and the second throw has a sum of 3 or does not have the sum of 4?
- Keyboards keys
Michael had small keys on the shelf, which you can see in the picture. Their tones were marked on the white keys. Little Clara found the keys. As she took them off the shelf, they fell out of her hand, and all the white keys spilled out. So that the broth
- Sick
Sick Marcel had already taken six tablets, which was a quarter of the total number of pills in the pack. How many pills were in the pack?
- Number
What number do I think? The third is 6, and a half is two more than its quarter.
- Katy
Kate paid 688 CZK for the package for the delivery of four meters of textile. When shipping and handling amounted to 48 CZK, what is the price of a one-meter textile?
- Meadow
On the meadow, there are horses, cows, and sheep grazing together with less than 200. If cows were 45 times more, horses 60 times more, and sheep 35 times more than there are now, their numbers would equal. How many horses, cows, and sheep are in the mead
- Daughters
The man conducting the census asks a woman the age of her three daughters. The woman says when multiplying the age, get the number 72; if their ages add up, get a number of our house, as you see. The man says: That is not enough to calculate their ages. S
- Cake fractions
Thomas ate 1/3 of the cake, and Bobby ate 2/5 of the rest of the cake. What fraction of cake is left over for others?
- Unknown number
Samuel wrote the unknown number. Then he had to add 200000 to the number, and the result was multiplied by three. When it was calculated, he was surprised because he would have received the result if he had written the digit to the end of the original num
- Travel by bus
Five girls are traveling by bus. Each holds in each hand two baskets. Each basket contains five cats. Each cat has five kittens. Three girls get off the bus, and another girl without baskets goes on board. The bus control driver. How many legs are on the
- Five girls
Five girls are traveling by bus. Each holds in each hand two baskets. In each basket are four cats. Each cat has three kittens. Two girls exit the bus. How many legs are on the bus?
- Hockey game
In the hockey game, they scored six goals. The Czechs played against Finland. The Czechs won 4:2. In what order did they fall goals? How many game sequences were possible during the game?
- Three-digit numbers
How many three-digit numbers are from the numbers 0, 2, 4, 6 8 (with/without repetition)?
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