Arithmetic + reason - practice problems - page 4 of 22
Number of problems found: 421
- Situation 7911
How many years will elapse from 1 January 2013 before the situation occurs that the product of the digits of a given year is greater than the sum of the digits of that year? A) 87 b) 98 c) 101 d) 102 e) 103 - Unknown number 16
My number's tens are three times more than the ones My number's ones are twice the number of thousands, and my number's hundreds are half the number of tens. I have two ones. Which number am I? - Suzan
My daughter reaches X years in X squared, said Susan's father in 2009 during her birthday celebration. When will the given fact become a reality, and how many years at that time will Susan have? - Blood
In the human body, the blood is about 7.3% body weight. How many kilograms of blood are in the human body with a weight of 109 kg?
- Combined 6724
Cows and sheep are kept on the farm. There are 37 cows, which is 25 more than the sheep. There are seven times fewer horses than cows and sheep combined. How many animals do they keep on the farm together? - Apples
Three types of apples are mixed in a box. What is the smallest number of apples we have to take from the box so that there are certainly at least three apples of the same kind among them? (Explain your solution!) - April (month)
April has 30 days. Roman saves his money in the box for the whole month. Every third day you save 10 cents. How many cents did Roman save during the entire month he started saving on April 1? - A family
A family of four pays for garbage collection per the year 1800 CZK. How many CZK (Czech crowns) a year does the waste company get from the house where live 93 people live? - Ground level
The ground-level temperature in Helsinki is 20°C lower than in London. The temperature in a basement flat in Helsinki is 5°C below the temperature at ground level. If it is -29°c in the basement, what is the temperature in London?
- Ichthyosaurs 5577
There are five huge aquariums on an island in Jurassic World. At least two and at most six ichthyosaurs swim in each of them, with a different number in each aquarium. How many ichthyosaurs are there in total in all the aquariums? - Flowerbed 5076
We will plant 24 lettuce seedlings on the 8.4 m long flowerbed. How far apart will we bet them? (Ignore the margins at the beginning and end of the flowerbed.) - Settle 4310
Karel owes Marek 70 euros, Marek owes Fér 100 euros, and Fero owes Karl 30 euros. When they settle their debts, how many euros will they have, more or less? - Television
When we add to the difference between the numbers 1704 and 654 and the difference between numbers 14920 and 14042, we get a year in which television was invented. How many years have people known TV? - 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?
- Significant 9321
Only herbs with 5 and 7 leaves grow in the Old Forest. When the boar Vavřínec collects raw materials for herbal liquor, it always tears off the whole herb and puts it in a basket. What is the most significant number of letters he will ever manage to have - Tablets 80294
Pepík is sick and has to take 1 tablet three times a day. How many days will a pack of 30 tablets last him if he only takes 1 tablet in the morning and evening every third day? - Beginning 6710
Artisans build a fence 24M long. The posts are placed 3 m apart. We will also set the posts at the beginning and end of the fence. How many posts will be needed? - Decorative 5887
Lenka tried to write the word Easter in decorative letters. To train the font, she wanted to write it on paper several times in a row. Which letter did she write as the 273rd in a row? - Christmas
Father said: "exactly after 56 hours, we will sit down at the Christmas Eve table" How was it and what time was it when Father said this sentence? They sit at the Christmas Eve table at exactly 6 PM.
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