# Divisibility + natural numbers - math problems

#### Number of problems found: 127

- Divisibility 2

How many divisors have integer number 13? - Divisibility

Determine all divisors of number 84. - 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. - Count of roots

How many solutions has equation x. y = 7757 with two unknowns on the set of natural numbers? - Three-digit integers

How many three-digit natural numbers exist that do not contain zero and are divisible by five? - Divisible by nine

How many three-digit natural numbers in total are divisible without a remainder by the number 9? - Twenty-five

How many are three-digit natural numbers divisible by 25? - Sum of the digits

How many are two-digit natural numbers that have the sum of the digits 9? - Rectangles

How many rectangles with area 8713 cm^{2}whose sides are natural numbers are? - Digit sum

Find the smallest natural number n, the digit sum of which is equal to 37. - Seven numbers

Write seven 4-digit numbers that are divisible by 3 and at the same time by 4. - Theorem prove

We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started? - How many 4

How many 4 digit numbers that are divisible by 10 can be formed from the numbers 3, 5, 7, 8, 9, 0 such that no number repeats? - Reminder and quotient

There are given the number C = 281, D = 201. Find the highest natural number S so that the C:S, D:S are with the remainder of 1, - Divisibility

Determine the smallest integer which divided 11 gives remainder 4 when divided 15 gives remainder 10 and when divided by 19 gives remainder 16. - How many

How many numbers are less than 222 with a digit sum is 8? - Odd numbers

The sum of four consecutive odd numbers is 1048. Find those numbers ... - Primes 2

Which prime numbers is number 2025 divisible? - Year 2018

The product of the three positive numbers is 2018. What are the numbers? - Three digits number

From the numbers 1, 2, 3, 4, 5 create three-digit numbers that digits not repeat and number is divisible by 2. How many numbers are there?

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Divisibility - math problems. Natural numbers - math problems.