Three digits number

How many are three-digit integers such that in they no digit repeats?

Result

n =  648

Solution:

Solution in text n =

Try another example






Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments:
1st comment
Be the first to comment!
avatar




To solve this example are needed these knowledge from mathematics:

Would you like to compute count of combinations? See also our variations calculator.

Next similar examples:

  1. Three digits number
    3digit From the numbers 1, 2, 3, 4, 5 create three-digit numbers that digits not repeat and number is divisible by 2. How many numbers are there?
  2. Three-digit
    seven How many three-digit natural numbers do not have the number 7?
  3. A three-digit numbers
    clocks_1 Determine the total number of positive three-digit numbers that contain a digit 6.
  4. Theorem prove
    thales_1 We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
  5. Task of the year
    years Determine the number of integers from 1 to 106 with ending four digits 2006.
  6. Digits
    numbers_48 How many five-digit numbers can be written from numbers 0.3,4, 5, 7 that is divided by 10 and if digits can be repeated.
  7. Cars plates
    car_plate How many different licence plates can country have, given that they use 3 letters followed by 3 digits?
  8. The camp
    diary At the end of the camp a 8 friends exchanged addresses. Any friend gave remaining 7 friends his card. How many addresses they exchanged?
  9. Basket of fruit
    hrusky_jablka In six baskets, the seller has fruit. In individual baskets, there are only apples or just pears with the following number of fruits: 5,6,12,14,23 and 29. "If I sell this basket," the salesman thinks, "then I will have just as many apples as a pear." Which
  10. PIN - codes
    pin How many five-digit PIN - code can we create using the even numbers?
  11. Variations
    pantagram Determine the number of items when the count of variations of fourth class without repeating is 42 times larger than the count of variations of third class without repetition.
  12. Metals
    metals_2 In the Hockey World Cup play eight teams, determine how many ways can they win gold, silver and bronze medals.
  13. Olympics metals
    olympics In how many ways can be win six athletes medal positions in the Olympics? Metal color matters.
  14. Medals
    medails In how many ways can be divided gold, silver and bronze medal among 21 contestant?
  15. Football league
    football In the 5th football league is 10 teams. How many ways can be filled first, second and third place?
  16. Coin and die
    die Flip a coin and then roll a six-sided die. How many possible combinations are there?
  17. Tricolors
    Flag_of_the_Netherlands.svg From the colors - red, blue, green, black and white, create all possible tricolors.