How many 4-tones chords (chord = at the same time sounding different tones) is possible to play within 7 tones?
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:
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?
- 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 class is 21 students. How many ways can choose two to examination?
- Weekly service
In the class are 20 pupils. How many opportunities have the teacher if he wants choose two pupils randomly who will weeklies?
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.
How many different triads can be selected from the group 38 students?
How many ways can divide 16 players into two teams of 8 member?
There are 9 interactive basic building blocks of an organization. How many two-blocks combinations are there?
- 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
- Count of triangles
Given a square ABCD and on each side 8 internal points. Determine the number of triangles with vertices at these points.
The urn is 8 white and 6 black balls. We pull 4 randomly balls. What is the probability that among them will be two white?
- Calculation of CN
- 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?
- Elimination method
Solve system of linear equations by elimination method: 5/2x + 3/5y= 4/15 1/2x + 2/5y= 2/15
- Sequence 2
Write the first 5 members of an arithmetic sequence a11=-14, d=-1