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

**Showing 0 comments:**

**Be the first to comment!**

#### To solve this example are needed these knowledge from mathematics:

## Next similar examples:

- Count of triangles

Given a square ABCD and on each side 8 internal points. Determine the number of triangles with vertices at these points. - Parametric equation

Find the parametric equation of a line with y-intercept (0,-4) and a slope of -2. - Hockey

Hockey match ended 8:2. How many different matches could be? - Trinity

How many different triads can be selected from the group 38 students? - 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? - Fish tank

A fish tank at a pet store has 8 zebra fish. In how many different ways can George choose 2 zebra fish to buy? - 2nd class combinations

From how many elements you can create 4560 combinations of the second class? - Combinations

From how many elements we can create 990 combinations 2nd class without repeating? - 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? - 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? - Weekly service

In the class are 20 pupils. How many opportunities have the teacher if he wants choose two pupils randomly who will weeklies? - Disco

On the disco goes 12 boys and 15 girls. In how many ways can we select four dancing couples? - 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? - Examination

The class is 21 students. How many ways can choose two to examination? - Two aces

From a 32 card box we randomly pick 1 card and then 2 more cards. What is the probability that last two drawn cards are aces? - 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? - Calculation of CN

Calculate: ?