Natural numbers - math problems
Number of problems found: 488
- Unknown numbers
The sum of two consecutive natural numbers and their triple is 92. Find these numbers.
How many natural numbers greater than 4000 which are formed from the numbers 0,1,3,7,9 with the figures not repeated, B) How many will the number of natural numbers less than 4000 and the numbers can be repeated?
- All pairs
Determine all pairs (m, n) of natural numbers for which is true: m s (n) = n s (m) = 70, where s (a) denotes the digit sum of the natural number a.
- Closest natural number
Find the closest natural number to 4.456 to 44.56 and 445.6.
- 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
- Sum of four numbers
The sum of four consecutive natural numbers is 114. Find them.
- 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.
How many do three-digit natural numbers not have the number 7?
- Two numbers 6
Fill two natural numbers a, b: 7 + blank- blank = 5
- The sum
The sum of the squares of two immediately following natural numbers is 1201. Find these numbers.
- Sum of the digits
How many are two-digit natural numbers that have the sum of the digits 9?
How many are three-digit natural numbers divisible by 25?
- Sum of seven
The sum of seven consecutive odd natural numbers is 119. Determine the smallest of them.
- Find two
Find two consecutive natural numbers whose product is 1 larger than their sum. Searched numbers expressed by a fraction whose numerator is the difference between these numbers and the denominator is their sum.
How many three-digit natural numbers is greater than 321 if no digit in number repeated?
- Three-digit integers
How many three-digit natural numbers exist that do not contain zero and are divisible by five?
- Count of roots
How many solutions has equation x. y = 7757 with two unknowns on the set of natural numbers?
- Sum of the seventeen numbers
The sum of the 17 different natural numbers is 154. Determine the sum of the two largest ones.
What is the remainder of the division of natural numbers 293 and 7?
- Divisible by nine
How many three-digit natural numbers in total are divisible without a remainder by the number 9?