The city has 7 fountains. Works only 6. How many options are there that can squirt ?
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:
There are 9 interactive basic building blocks of an organization. How many two-blocks combinations are there?
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?
A job placement agency in Mumbai had to send ten students to five companies two to each. Two of the companies are in Mumbai and others are outside. Two of the students prefer to work in Mumbai while three prefer to work outside. In how many ways assignment
The class is 21 students. How many ways can choose two to examination?
On the disco goes 12 boys and 15 girls. In how many ways can we select four dancing couples?
- Weekly service
In the class are 20 pupils. How many opportunities have the teacher if he wants choose two pupils randomly who will weeklies?
- PIN - codes
How many five-digit PIN - code can we create using the even numbers?
- 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 4-tones chords (chord = at the same time sounding different tones) is possible to play within 7 tones?
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?
- Olympics metals
In how many ways can be win six athletes medal positions in the Olympics? Metal color matters.
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 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?
Determine the number of items when the count of variations of fourth class without repeating is 42 times larger than the count of variations of third class without repetition.
- 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?