Calculation of CN
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:
- 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?
- 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?
How many different triads can be selected from the group 38 students?
How many elements can form six times more combinations fourth class than combination of the second class?
The player gets 8 cards of 32. What is the probability that it gets a) all 4 aces b) at least 1 ace
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?
How many 4-tones chords (chord = at the same time sounding different tones) is possible to play within 7 tones?
The village markets have 5 kinds of sweets, one weighs 31 grams. How many different ways a customer can buy 1.519 kg sweets.
The class is 21 students. How many ways can choose two to examination?
- 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?
How many ways can divide 16 players into two teams of 8 member?
From how many elements we can create 990 combinations 2nd class without repeating?
There are 9 interactive basic building blocks of an organization. How many two-blocks combinations are there?
- Count of triangles
Given a square ABCD and on each side 8 internal points. Determine the number of triangles with vertices at these points.
How many different committees of 6 people can be formed from a class of 30 students?
- 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?
- Six terms
Find the first six terms of the sequence a1 = -3, an = 2 * an-1