# Points in plane

The plane is given 12 points, 5 of which is located on a straight line. How many different lines could by draw from this points?

Result

n =  57

#### 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. Count of triangles
Given a square ABCD and on each side 8 internal points. Determine the number of triangles with vertices at these points.
2. Cards
Suppose that are three cards in the hats. One is red on both sides, one of which is black on both sides, and a third one side red and the second black. We are pulled out of a hat randomly one card and we see that one side of it is red. What is the probabi
3. Hockey
Hockey match ended 5:10. How many different matches could be?
4. Trinity
How many different triads can be selected from the group 29 students?
5. 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?
6. Fish tank
A fish tank at a pet store has 10 zebra fish. In how many different ways can George choose 4 zebra fish to buy?
7. 2nd class combinations
From how many elements you can create 1081 combinations of the second class?
8. 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?
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. Hockey game
In the hockey game was made 6 goals. Czech played against Finland. Czechs won 4:2. In what order to fall goals? How many game sequence was possible during the game?
11. Disco
On the disco goes 12 boys and 15 girls. In how many ways can we select four dancing couples?
12. Weekly service
In the class are 16 pupils. How many opportunities have the teacher if he wants choose two pupils randomly who will weeklies?
13. The confectionery
The confectionery sold 5 kinds of ice cream. In how many ways can I buy 3 kinds if order of ice creams does not matter?
14. Calculation of CN
Calculate: ?
15. One green
In the container are 45 white and 15 balls. We randomly select 5 balls. What is the probability that it will be a maximum one green?