Numbers - math problems
Number of problems found: 1649
- Two numbers 7
The sum of two consecutive even numbers is 30. Find the numbers.
- Unknown numbers
The sum of two consecutive natural numbers and their triple is 92. Find these numbers.
- Year 2018
The product of the three positive numbers is 2018. What are the numbers?
Forgiven real numbers, calculate the reciprocal numbers.
- Three-digit numbers
Use the numbers 4,5,8,9 to write all three-digit numbers without repetition. How many such numbers are there?
- Imaginary numbers
Find two imaginary numbers whose sum is a real number. How are the two imaginary numbers related? What is its sum?
- Three numbers
How much we increases the sum of three numbers when the first enlarge by 14, second by 15 and third by 16? Choose any three two-digit numbers and prove results.
- Mixing operations with numbers
Subtract twice the number -23.6 from the difference of the numbers -130 and -40.2.
- Even / odd numbers
a / Using variable n write two consecutive odd numbers. b / the sum of three consecutive odd numbers is 333. What are this numbers?
- Odd numbers
The sum of four consecutive odd numbers is 1048. Find those numbers ...
- Big numbers
How many natural numbers less than 10 to the sixth can be written in numbers: a) 9.8.7 b) 9.8.0
- Quadratic equation
Determine the numbers b, c that the numbers x1 = -1 and x2 = 3 were roots of quadratic equation: ?
- AM of three numbers
The number 2010 can be written as the sum of 3 consecutive natural numbers. Determine the arithmetic mean of these numbers.
- A three-digit numbers
Determine the total number of positive three-digit numbers that contain a digit 6.
Find number on thenumber line that has same distance from this numbers:
- Primes 2
Which prime numbers is number 2025 divisible?
- House numbering
The residential house has three entrances numbered even numbers, successive immediately behind. The sum of the two numbers on the outside entrances is 68. Calculate the middle of these three numbers.
- Telephone numbers
How many 7-digit telephone numbers can we put together so that each number consists of different digits?
- Seven numbers
Write seven 4-digit numbers that are divisible by 3 and at the same time by 4.
- Distance of numbers
Which number has the same distance from the numbers -5.65 and 7.25 on the numerical axis?