Natural numbers - practice problems - page 7 of 87
Number of problems found: 1736
- Four numbers 3
What least number must be added to each of the numbers 6,15,20 and 43 to make them proportional? - A teacher 3
A teacher gives pens and pencils to elementary students at an equal rate in each classroom. Pencils; Pens 18 ; 72 29 ; A 35 ; 140 B ; 168 Determine the unknown value for the letter B. - The sum 52
The sum of digits of a two digits number is 10. On interchanging the digit, the number obtained is 54 less than the original number. What is the original number? - Fibonacci numbers
If the first three Fibonacci numbers are given as x1 = 1, x2 = 1, and x3 = 2, then what is the least value of n for which x(n) > 500?
- 4th digit
Write a digit in place of X so that 85X634 is divisible by 11. - Series - double GP
In the following series, which number will replace the question mark? 4, 32, 16, 128, 64,? - Multiple numerical bases Find the value of x for which 312four+52x=96ten . Hint: four, x, and ten are the base of the given number.
- Geometric progression
For the following geometric progression, find the seventh (7th) term: 4, 12, 36, 108, . - Literacy ratio
The town's population is 311250. The ratio of women to men is 43: 40. If 24% of men and 8% of women are literate, then find the total number of literate persons in the town.
- Susan 4
Susan went to school for 219 days in a full year. If her attendance is 75%, find the number of days on which the school was open. - The population 3
The population of the town is 126800. It increases by 15% in the first year and decreases by 20% in the second year. What is the population of the town at the end of 2nd year? - Children
Of the estimated 2 billion children living in the developing world, approximately 400 million do not have access to safe drinking water. Approximately what percentage of children in developing countries do not have safe water to drink? - Population growth 2
The present population of the town is 200,000. Its population increases by 10% in the first year and 15% in the second year. Find the population of the town at the end of the two years. - Tricky result
Classic adding with percentages: Evaluate 28% of 450 + 45% of 280
- Students 48
If 80% of the students of a school are boys and 225 are girls, find the number of all students. - A fruit 4
A fruit seller had some apples. He sells 40% apples and still has 420 apples. How many apples originally he had? - An ice cream
An ice cream machine has 3 flavors - vanilla, chocolate, and strawberry. The ice cream can be served in 2 ways - in a cone or in a cup. Along with the ice cream, there are 5 options for toppings - hot fudge, caramel, nuts, cherries, and sprinkles. What is - A band A band played an encore at 2 of its last 4 shows. Considering this data, how many of the band's next 14 shows would you expect to have an encore?
- A fair 2
A fair die is thrown two times. What is the probability that the sum of the score is almost 8?
Twelve athletes are joining the Topolcany Marathon Event. How many ways can the first, second, and third placers be chosen?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
