Permutations + divisibility - math problems
Number of problems found: 5
- Three numbers
We have three different non-zero digits. We will create all 3 digits numbers from them to use all 3 figures in each number. We add all the created numbers, and we get the sum of 1554. What were the numbers?
- 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?
- Digit sum
How many are three-digit numbers that have a digit sum of 6?
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
How many rectangles with area 8713 cm2 whose sides are natural numbers are?
See also our permutations calculator. Permutations - math problems. Divisibility - math problems.