Reason + divisibility - math problems

Number of problems found: 98

  • Divisibility
    numbers_29 Write all the integers x divisible by seven and eight at the same time for which the following applies: 100
  • Divisibility by 12
    numbers2 Replace the letters A and B by digits so that the resulting number x is divisible by twelve /find all options/. x = 2A3B How many are the overall solutions?
  • Year 2018
    new_year The product of the three positive numbers is 2018. What are the numbers?
  • Probability
    fractions_1 How probable is a randomly selected three-digit number divisible by five or seven?
  • Have solution
    numbers_44 The sum of four consecutive even numbers is 92. Determine these numbers.
  • Digit sum
    cisla_7 How many are three-digit numbers that have a digit sum of 6?
  • Sum of the digits
    numbers2 How many are two-digit natural numbers that have the sum of the digits 9?
  • Twenty-five
    prime How many three-digit natural numbers are divisible by 25?
  • How many
    numbers2_3 How many numbers are less than 222 with a digit sum is 8?
  • Number
    prime What number should be placed instead of the asterisk in number 702*8 to get a number divisible by 6?
  • Hens and pigs
    pigs_2 Hens and pigs have 46 feet in total. At least how much can heads have?
  • Big number
    modulo_1 hat is the remainder when dividing number 10 to 47 - 111 by number 9?
  • Four-digit number
    numbers_1 Find also a four-digit number, which quadrupled written backwards is the same number.
  • Divisible by nine
    numbers_2 How many three-digit natural numbers in total are divisible without a remainder by the number 9?
  • MO C–I–1 2018
    numbers_49 An unknown number is divisible by just four numbers from the set {6, 15, 20, 21, 70}. Determine which ones.
  • Odd numbers
    friends4_2 The sum of four consecutive odd numbers is 1048. Find those numbers ...
  • 7 digit number
    numbers2_49 If 3c54d10 is divisible by 330, what is the sum of c and d?
  • Children
    car_game Less than 20 children is played various games on the yard. They can create a pairs, triso and quartets. How many children were in the yard when Annie came to them?
  • Twos
    2019 Vojta started writing the number of this year 2019202020192020 into the workbook. .. And so he kept going. When he wrote 2020 digits, no longer enjoyed it. How many twos did he write?
  • Six-digit primes
    numberline_1 Find all six-digit prime numbers that contain each one of digits 1,2,4,5,7 and 8 just once. How many are they?

Do you have an interesting mathematical word problem that you can't solve it? Submit a math problem, and we can try to solve it.

We will send a solution to your e-mail address. Solved examples are also published here. Please enter the e-mail correctly and check whether you don't have a full mailbox.

Please do not submit problems from current active competitions such as Mathematical Olympiad, correspondence seminars etc...

Reason - math word problems. Divisibility - math word problems.