# Reason + divisibility - practice problems

#### Number of problems found: 159

- What is 20

What is the least number that should be added to 2497 so that the sum of the digits is divisible by 5, 6, and 10? - Three-digit 69114

How many three-digit numbers have a digit sum of 6? Write the ratio of the number of created even and odd numbers and adjust it to the basic form. - Two-digit 68654

List all compound positive two-digit numbers whose greatest common divisor with the number 51 is the number 17. - Divisible 68644

List all divisible numbers by six and seven that are greater than 79 and less than 91. - Three-digit 66854

How many three-digit numbers with a digit sum of 9, in which no digit can repeat? - Expression 66754

Find the largest natural number n for which the value of the expression (37-2n) / 3 equals the natural number. - Find two digits

Find the possible values of A and B if the six-digit number 2A16B6 is divisible by 4 and 9. Please write the result as a composed number. - How many

How many double-digit numbers divided by nine give the rest of the seven? - Even five-digit

How many can even five-digit natural numbers with different digits be created from the digits 0 - 6? - Dividing

One always remained when dividing the tangerines into packages of 8 or 10. How many were there if more than 250 and less than 300? - Three-digit 56441

Determine the number of all-natural three-digit numbers divisible by 9, consisting of the numbers 0, 1, 2, 5, 7: - Lcm = 22 + gcd

The least common multiple of two numbers is 22 more than their greatest common divisor. Find these numbers. - Directly 55591

If n is a natural number that gives a division of 2 or 3 when divided by 5, then n gives a residue of 4 when divided by 5. Prove directly - Four-digit 55481

Find all four-digit abcd numbers to which: abcd = 20. ab + 16. cd, where ab and cd are double digits numbers from digits a, b, c, and d. - Consecutive 47011

The sum of two consecutive odd numbers is 184. What are these numbers? - 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? - Probability 42081

What is the probability of any two-digit natural number a) is divisible by seven, b) is divisible by nine, c) is not divisible by five. - Five-digit number

Anna thinks of a five-digit number not divisible by three or four. If he increments each digit by one, it gets a five-digit number divisible by three. If he reduces each digit by one, he gets a five-digit number divisible by four. If it swaps any two digi - Together

The three friends divided the balls in a ratio of 6:5:4. Some two got 126 balls. How many balls were there together? - Coloured numbers

Mussel wrote four different natural numbers with colored markers: red, blue, green, and yellow. When the red number divides by blue, it gets the green number as an incomplete proportion, and yellow represents the remainder after this division. When it div

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