Divisibility - practice problems - page 7 of 21
Number of problems found: 419
- Repeated 33571
Use the digits 3, 4, 5, and 6 to write all even numbers. How many such numbers can you write when you can repeat the numbers? - Three-digit 33263
Calculate the difference between the smallest odd four-digit number and the largest even three-digit number, where we can form each number from only these digits: 0, 1, 3, 5, 7, 8, 9 without repeating digits. - Sum of odd numbers
Find the sum of all odd integers from 13 to 781. - Divisible by nine How many three-digit natural numbers in total are divisible without a remainder by the number 9?
- Denotes 32113
Write a formula for an even number x if y denotes any odd number. - Calculate 31861 Calculate the digit sum of 1 345 901
- Consecutive 31611 The sum of two consecutive natural numbers, of which the greater is 4x, equals the number 55. Determine the number x.
- Numbered 31051
Pavel walks down the street on the side where the houses are numbered with even numbers. From the number 2, count the number of twos in the house numbers. He stops at home, in front of which he counts the fifteen two. What is the number of this house? - Five-digit 30481 Find the smallest five-digit number A432B that is divisible by 15.
- How many
How many numbers are less than 222 with a digit sum of 8? - Air draft The numbers 1,2,3,4,5 are written on five tickets on the table. Air draft randomly shuffled the tickets and composed a 5-digit number from them. What is the probability that he passed: and the largest possible number b, the smallest possible number c, a n
- Drawing from a hat
When drawing numbers from a hat from 1 to 35, we select randomly given numbers. What is the probability that the drawn numbers will be divisible by 8 and 2? - Remembers: 28341
My mother forgot the PIN code of her ATM card, which consisted of 4 different numbers. Help her put it together if she remembers: And - all the numbers were even B - zero in the pin code was not C - the first number was a multiple of the second number, wh - How many 4
How many four-digit numbers that are divisible by ten can be created from the numbers 3, 5, 7, 8, 9, and 0 such no digits repeats?
- Probability 28111
1. What is the probability that we write an even number from the numbers from 1 to 20? 2. We randomly draw one ticket From the eighteen tickets numbered 1 - 18. What is the probability that the ticket drawn will have: a) a number divisible by 3 c) a prime - Measuring 26891
What is the smallest square space we can tile with tiles measuring 25 x 15 cm, knowing there will be no need to cut them? How many tiles will we use? - Numbers 26591 How many can even 2-digit numbers be created from the number 2,3,4,5 if it cannot repeat them?
- The sum
The sum of five consecutive odd numbers is 75. Please find out the sum of the second and fourth of them. - Divisors of 560 Which of the numbers 5, 6, 7, 14, and 15 are divisors of 560? Please justify the answer.
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