# Three-digit numbers

How many three-digit numbers are from the numbers 0 2 4 6 8 (with/without repetition)?

Result

x =  100
y =  48

#### Solution:

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

Be the first to comment!

## Next similar examples:

1. Ice cream
Annie likes much ice cream. In the shop are six kinds of ice cream. In how many ways she can buy ice cream to three scoop if each have a different flavor mound and the order of scoops doesn't matter?
2. Theorem prove
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?
3. PIN - codes
How many five-digit PIN - code can we create using the even numbers?
4. Trinity
How many different triads can be selected from the group 43 students?
5. Chords
How many 4-tones chords (chord = at the same time sounding different tones) is possible to play within 7 tones?
6. Division
Division has 18 members: 10 girls and 6 boys, 2 leaders. How many different patrols can be created, if one patrol is 2 boys, 3 girls and 1 leader?
7. First class
The shipment contains 40 items. 36 are first grade, 4 are defective. How many ways can select 5 items, so that it is no more than one defective?
8. Combinatorics
The city has 7 fountains. Works only 6. How many options are there that can squirt ?
9. Competition
15 boys and 10 girls are in the class. On school competition of them is selected 6-member team composed of 4 boys and 2 girls. How many ways can we select students?
10. Volleyball
8 girls wants to play volleyball against boys. On the field at one time can be six players per team. How many initial teams of this girls may trainer to choose?
11. Chess
How many ways can select 4 fields on classic chess board with 64 fields, so that fields don't has the same color?
12. Metals
In the Hockey World Cup play eight teams, determine how many ways can they win gold, silver and bronze medals.
13. Medals
In how many ways can be divided gold, silver and bronze medal among 21 contestant?
14. Variations
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.
15. Count of triangles
Given a square ABCD and on each side 8 internal points. Determine the number of triangles with vertices at these points.
16. Tricolors
From the colors - red, blue, green, black and white, create all possible tricolors.
17. Tokens
In the non-transparent bags are red, white, yellow, blue tokens. We 3times pull one tokens and again returned it, write down all possibilities.