# 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 cm2 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.