Divisibility + multiplication - math problems

Number of problems found: 34

  • Four multiples
    Four multiples of 6, he writes the following 12  24  56  72, which is correct?
  • Three-digit numbers
    How many are all three-digit numbers that are made up of digits 0,2,5,7 and are divisible by 9 if the digits can be repeated?
  • We roll
    We roll two dice A. - what is the probability that the sum of the falling numbers is at most 4 B. - is at least 10 C. - is divisible by 5?
  • Even/odd numbers
    What is the product of 0.97 and the next odd decimal number?
  • Find unknown number
    What is the number between 50 and 55 that is divisible by 2,3,6,9?
  • Prime divisors
    Find 2/3 of the sum's ratio and the product of all prime divisors of the number 120.
  • How many 4
    How many four-digit numbers that are divisible by ten can be created from the numbers 3, 5, 7, 8, 9, 0 such no digits repeats?
  • Twenty-five
    How many are three-digit natural numbers divisible by 25?
  • Digits
    How many odd four-digit numbers can we create from digits: 0, 3, 5, 6, 7? (a) the figures may be repeated (b) the digits may not be repeated
  • Three-digit integers
    How many three-digit natural numbers exist that do not contain zero and are divisible by five?
  • Dozen
    What is the product of 26 and 5? Write the answer in an Arabic numeral. Add up the digits. How many of this is in a dozen? Divide #114 by this
  • Odd/even number
    Pick any number. If that number is even, divide it by 2. If it's odd, multiply it by three and add one. Now repeat the process with your new number. If you keep going, you'll eventually end up at one every time. Prove.
  • Inverted nine
    In the hotel Inverted Nine, each hotel room number is divisible by 6. How many rooms can we count with the three-digit number registered by digits 1,8,7,4,9?
  • Divisible by five
    How many different three-digit numbers divisible by five can we create from the digits 2, 4, 5? We can repeat the digits in the created number.
  • Two friends
    Two friends met as a good man perish together for a beer. After recovery the most important topics (politics, women, football ...), one asks: - And how many do you have children? - I have 3 children. - And how many years have? Friend already not want to a
  • Permutations
    How many 4-digit numbers can be composed of numbers 1,2,3,4,5,6,7 if: and the digits must not be repeated in the number b, the number should be divisible by five, and the numbers must not be repeated c, digits can be repeated
  • Lcm 2
    Create the smallest possible number that is divisible by numbers 5,8,9,4,3
  • Meadow
    On the meadow grazing horses, cows, and sheep, together with less than 200. If cows were 45 times more, horses 60 times more, and sheep 35 times more than there are now, their numbers would equally. How many horses, cows, and sheep are on the meadow toget
  • 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?
  • Daughters
    The man conducting the census asks a woman to age of three daughters. Woman says when multiply the age getnumber 72; if their ages add up, get a number of our house, as you see. The man says: That is not enough to calculate their ages. She says: my oldest

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Divisibility - math problems. Multiplication Problems.