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:
How many different triads can be selected from the group 38 students?
- 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?
- 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?
The player gets 8 cards of 32. What is the probability that it gets a) all 4 aces b) at least 1 ace
From how many elements we can create 990 combinations 2nd class without repeating?
The class is 21 students. How many ways can choose two to examination?
How many ways can divide 16 players into two teams of 8 member?
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?
There are 9 interactive basic building blocks of an organization. How many two-blocks combinations are there?
- 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 elements can form six times more combinations fourth class than combination of the second class?
The village markets have 5 kinds of sweets, one weighs 31 grams. How many different ways a customer can buy 1.519 kg sweets.
- 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?
- 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?
Determine the discriminant of the equation: ?
- Sequence 3
Write the first 5 members of an arithmetic sequence: a4=-35, a11=-105.